3. Nautical Instruments
Prices in U.S. Dollars are in GREEN
![]() |
3.68 MINIATURE COMPASS. Authentic mid-19th century navigational compass made for the English speaking market. This diminutive nautical compass has an engraved paper card overlaid on mica with a central brass/agate pivot. The compass rose is marked in points of the compass down to ½ points, with the cardinal and intercardinal points identified. North is marked by a classic fleur-de-lis. It rests in its heavily weighted brass bowl with wavy glass cover housed within the knurled bezel. The inside of the bowl is marked with a vertical lubber's line. The compass is complete with its original brass gimbal ring, swinging freely and accurately. The card itself measures 3 inches in diameter. The compass bezel is 3 ½ inches across and the gimbal is 4 ½ inches wide. Excellent original condition throughout noting toning at the north and south points where the internal bar magnet is attached. This compass, without a box, is ideal for mounting in a project in need of such a component like an empty binnacle or display. Circa 1870. 149 |
perspective |
card |
![]() |
3.67 AMERICAN BOXED COMPASS. Diminutive early 1900's navigational boxed made by the venerable nautical instrument maker and ship chandler "Wilcox Crittendon" as symbolized by the conjoined letters "WC" at the north point. Further, a complete label in the bottom of the box reads "Wilcox Cittendon Co, Middleton, Conn, U.S.A." dated "1940." This near miniature compass has a composition card amazingly identified with all of the cardinal and intercardinal points of the compass marked down to half points. A total of 64! As noted, North is denoted by the maker's mark. The card revolves on a high quality jeweled pivot. The body of the compass is lustrous solid bronze, suspended in a bronze gimbal ring mounted in its machine dove-tailed hardwood (maple?) box in original oxblood paint finish. The compass card measures a mere 2 inches in diameter and the compass body is 3 inches across. The box measures 4 ¾ inches square by 3 ¼ inches high. The lid slides freely and is in perfect condition. This compass is just about as nice as they come, exhibiting all of the bells and whistles. 295 |
box |
in box |
card |
![]() |
3.81 MARINER's QUADRANT. Very rare, highly desirable 18th century navigational device known as a quadrant, or alternatively "octant." This early example is patterned after John Hadley's double reflecting quadrant first introduced in 1731. It is an extraordinary instrument which has limbs of mahogany with brass furniture and a finely engraved boxwood scale inlaid into the large arc. The scale is divided from 0 to 90 degrees, or one quarter of a circle, hence the designation "quad"rant. The degrees are marked by 5's. Each degree is sub-divided into 20 arc minute segments, with diagonal lines cutting across 10 concentric circles. With this arrangement the index arm and its ivory "line of faith" can provide a reading to an accuracy of 2 arc minutes, interpolated to 1 arc minute. Below the diagonal scale is a second linear scale divided into single degrees and subdivided to 20 arc minutes. These precise divisions are quite remarkable considering they were hand-done, before the advent of the mechanical dividing engine! To attain such accuracy the instrument was necessarily large. The index arm is slightly over 18 1/2 inches in length and the scale is 15 inches wide. The quadrant is equipped with an index mirror and horizon mirror, a set of three pivoting filters, and a peep sight with pivoting shade. It has a blank ivory nameplate in the cross brace. On the reverse are three brass "feet" and the horizon mirror box adjusting assembly. The index arm stop is a single brass thumb screw. There is no fine adjustment feature on these early instruments. Condition is remarkably excellent for a working device which saw sea service over 260 years ago! A true museum piece! Price Request The search for "The longitude" in early 18th century England was encouraged by the Board of Longitude which offered a massive prize of £30,000 for the solution. It spurred much innovative interest in celestial navigation. In May 1731 John Hadley, an English mathematician, presented a paper to his fellow members of the Royal Society in London describing the use of a double reflecting quadrant or "octant." His quadrant was based on the principle of light reflection and angles of incidence that were described by Robert Hooke, Isaac Newton, and Edmund Halley in the previous century. The principle is that when the angle described by an observed celestial object is seen through a double reflection, that angle is condensed in half between the two reflecting surfaces. Thus Hadley's quadrant, reading to 90°, had an arc of only 45°, or one eighth of a circle, making it an "octant." Basically the instrument consisted of a triangular wooden frame with a swinging index arm pivoted at the apex. A mirror was fixed at that point which would move with the arm. A second mirror, half of which was transparent so that the user could view the horizon, was fixed to one limb and a sight was attached to the opposite limb. A precise scale, calibrated in degrees, was scribed on the arc of the bottom limb of the triangle, across which the index arm moved. This continued to be the basic form of angle measuring navigational instruments for the next 250 years, and still remains, even with the advent of GPS! |
detail |
back |
back detail |
index |
scale |
![]() |
3.65 AMERICAN INCLINOMETER. Very scarce turn-of-the-last century ship's inclinometer made by the Pacific Northwest instrument maker Max Kuner as engraved on the silvered brass dial "MAX KUNER CO. SEATTLE." This handsome instrument is most unusual in that the body of the instrument is turned oak wood, not the typical brass. The bright dial is calibrated in single degrees of heal from 0 to 54 port and starboard, marked by 10's. The slender steel indicator needle is finely sculpted in a decorative manner in keeping with such inclinometers produced in the 1800's. The dial is covered by a protective glass crystal housed in its turned brass bezel mounted to oak. For stability the oak backboard has brass brackets top and bottom for attachment to the pilot house bulkhead. The dial is 6 ¼ inches across, with the entire instrument measuring 9 ¾ inches in diameter and 11 inches top to bottom on the brackets. Excellent original condition. There is one small spot of oxidation at the 2 o'clock position on the dial, indicative of its service at sea. The instrument performs perfectly. The action is lively and accurate. This is the first such cased wooden inclinometer we have seen in our 40+ years in the nautical antique business. WAS $695 NOW 295 |
detail |
back |
![]() |
3.66 DAVIS QUADRANT. Very rare, highly sought after authentic late 17th century or very early 18th century mariner's navigational device known as a Davis Quadrant or alternatively "Backstaff." The backstaff name was given to the instrument which measured the altitude of the sun as projected by its shadow on a scale held by the observer with his back to the sun. The idea for measuring the sun's altitude using back observations originated with Thomas Harriot. Many such instruments evolved from the earlier crosstaff, but only the Davis quadrant (1594) remained dominant in the evolution of navigational instruments. As such, the Davis quadrant is synonymous with the backstaff. This ancient maritime instrument is made of two hardwoods, one being rare boxwood (prized for its homogeneous grain) for the scales and the other a fruitwood such as pear or apple for the sturdy limbs. It bears two engraved arc scales. The large arc is calibrated with the early form diagonal scale reading in degrees left to right 0 - 25 calibrated in 20 arc minute segments, marked by 5's and further divided to 2 arc minutes on the diagonal scale. The small arc reads from 0 degrees at the top down to 62 degrees divided by single degrees and marked by 5's. The back edge of the arc is also calibrated in degrees from 0 - 60 marked by 5's. The observed altitude comprised the sum of the readings of the two scales. This instrument is unusually well-decorated with inlaid brass diamonds at the joints and a myriad of stars, fleur-de-lis and herringbone designs. These all harken back to the time when such an instrument was considered a work of art in addition to being utilitarian. This example retains its rarely-found horizon vane. The scales and the vane show evidence of worming that was prevalent in 18th century Europe. This is actually a good sign of its age. The limbs of this instrument are free of such worming, indicating the construction of two different woods. There is a large blank ivory maker's plate inlaid near the brace. 25 inches long on the longest limb. 14 ¼ inches wide on the large arc by ¾ inches thick. The horizon vane is exactly 5 inches wide and 2 inches high. Definitely a museum piece! Price Request |
detail |
back |
brace |
crook |
horizon vane |
Large arc |
small arc |
![]() |
3.63 EARLY LOG BY NOTED MAKER. Mid-1800's patent taffrail log by Thomas Walker as marked on its porcelain dial "WALKER'S SHIP LOG PATENTED 18th SEPt 1866." This handsome, very ingenious navigational instrument is heavy solid brass. The dial contains 3 read-outs which record nautical miles the ship has traveled. The first indicates quarter miles, the second single miles up to 10, and the third 10's of miles up to 100. Such a log was an essential component of the dead reckoning navigational method when coupled with time traveled. The perfect porcelain dial is protected by a rotating brass sleeve. Above, between the attachment point and the register, is a hole for oiling. There are 4 tapered blades affixed to the body, each stamped with Walker's trade mark "TW" flanking an anchor. The complex internal gearing system is in excellent, working condition. The spinner turns freely and registers properly. 19 ¾ inches long overall. The body measures 1 ¾ inches in diameter. It is 5 ¾ inches wide on the blades. Excellent functional and cosmetic condition throughout with highly polished lacquered surfaces. Museum quality. 895 |
closed |
maker |
makers mark |
![]() |
3.59 EARLY OCTANT. First quarter of the 19th century navigational instrument of ebony, brass and ivory. The ivory maker's plaque reads "NORIE & Co LONDON." Below it is stamped "H. DUREN NEW-YORK." This fine reflecting instrument has an ebony "T" frame supporting the large arc inlaid with an ivory scale divided in degrees from -2 to 100, subdivided by 20 minutes and marked by 5's. The ivory vernier on the braced brass index arm allows a reading to a single arc minute, making for navigational accuracy of more than a nautical mile. The index arm swings freely with a knurled stop and a fine adjust tangent screw. Both the index and horizon mirrors are present with a full set of index and horizon sun shades. The brass peep sight is of early form with a pivoting shutter. On the back are 3 brass "feet" for supporting the instrument in its box. Indicative of its early form this instrument has an ivory "pencil" and a trapezoidal ivory "note pad" inlaid in one arm on the back for recording readings. Both of these features are pre-1830. On the opposite arm is the complex mirror box adjustment assembly. The instrument measures 12 inches high by 9 3/4 inches wide on the large arc. It fits in its classic old stepped keystone box made of oak. It is complete with the original skeleton key lock with inlaid ivory key escutcheon, along with hook and eye closure. The box measures 13 inches long by 11 ½ inches wide and 3 ¾ inches thick on the upper tier. The entire assembly can be rated as in "good" condition. There is an age crack in the bottom and there are a couple of old clever repairs which add to its history and charm. A nice early instrument showing several outdated features. It is very interesting to note that this instrument started out its life in Britain then later crossed the Atlantic to serve in America. 995 |
detail |
back |
back detail |
in box |
box |
open |
interior |
pencil |
maker |
![]() |
3.58 EARLY QUADRANT. Rare, 18th century mariner’s navigational device known as an octant, or more precisely quadrant, because it reads 90 degrees -- one quarter of a circle. This double reflecting scientific instrument features limbs of exotic ebony with inlaid ivory scales. The large arc is meticulously scribed in single degrees from -5 to 95, subdivided to 20 minutes, marked by 5’s. Telling of its early manufacture are the series of 3 * on either end of the scale. Such decorations were found on backstaves 200 years earlier! The scale is swept by the index arm having an inlaid “0”-centered vernier scale. This was known as the type “A” vernier introduced around 1770. Together they provide a reading to an accuracy of about 1 arc minute. What is remarkable is that the calibrations were engraved by hand, done prior to the widespread use of Ramsden’s diving engine invented in 1773. This handsome instrument has a large flat brass index arm boldly and beautifully-engraved in cursive script “Wm Mann Fecit Liverpool.” Fecit of course is the early Latin term for “He made it” popularly used by makers in the 18th century and earlier. The arm runs over the large arc with a single thumbscrew stop without a fine adjustment. The quadrant is complete with index and horizon mirrors and a full set of 4 pivoting index shades. The middle “T” brace retains the blank ivory maker’s label and its original ivory pencil which was used to record readings on the inlaid trapezoidal ivory notepad on the reverse. To take sights a singular brass peep sight is provided. On the reverse are the mirror adjustment apparatus and 3 brass “feet” for support when not in use. This museum quality instrument measures 17 ¼ inches tall and 13 ¾ inches wide. It is in excellent overall condition considering its 240+ years. SOLD William Mann (I) worked as a mathematical instrument maker on Castle Street, Liverpool in 1774, moving to St. George’s Dock Passage in 1781. (Gloria Clifton, “Dictionary of British Scientific Instrument Makers 1550-1851,” 1995, National Maritime Museum, Philip Wilson Publishers, London.) |
detail |
back |
reverse detail |
sight |
stop |
pencil |
Vernier |
maker |
![]() |
3.56 INCLINOMETER. Delightful, near miniature ship’s pilot house clinometer made by the famous British instrument making firm Sestrel as boldly marked on the dial, below which is “MADE IN ENGLAND.” The flawless white enamel dial bears a scale indicating the heel port and starboard up to 45 degrees calibrated in single degrees marked by 10’s. Each end of the scale is embellished with a nautical fleu-de-lis. A free swinging pendulum indicates the reading. When not in use the pendulum can be locked on center by means of a knurled thumbscrew at the bottom of the case. The case is bright solid brass with a heavy cast bezel housing the beveled glass crystal. The base of the case flares to a flange containing three holes for mounting to the bulkhead. The flange measures 5 1/8 inches in diameter. The dial is 3 5/8 inches in diameter and the case is 2 ½ inches deep. Condition is outstanding, cosmetically perfect and functional in all respects. A fine nautical instrument. 239 |
perspective |
back |
dial |
![]() |
3.57 EARLY SEXTANT. Particularly nice mariner’s sextant of English manufacture dating from the second quarter of the 19th century. The large arc is engraved “Youle 83 Leadenhall St. London.” This all brass navigational instrument is of early form with an inlaid silver scale calibrated from -5 to 150 degrees subdivided in 15 arc minute increments, marked by 10’s. The silver vernier inset into the braced index arm allows a reading with an accuracy of arc seconds. To aid in taking the reading a pivoting magnified is provided. The classic “T” frame is cast brass in its original blackened finish (to prevent glare during sun shots). This instrument retains both index and horizon mirrors and a full set of 4 index filters and 3 horizon filters, all in excellent condition. The back is equipped with its sculpted mahogany handle and 2 brass “feet” for alignment in the box. The sight tube holder has an adjustable height feature and accommodates all 5 sight tubes. These consist of the long telescope with cross hairs, short telescope, night telescope, peep sight and interchangeable tube for varying the power of the long telescope. The screw-on eyepiece sun filer is present as is the rarely-found adjusting screw driver. Its presence indicates the care lavished on it by its owner Captain. All components are housed in the especially lovely keystone mahogany case with fine dovetailed construction. Amazingly, there are no cracks in the lid and it bears the trade label of the famous American instrument makers and ships’ chandlers “T. S. & J.D. Negus, New York.” The case has all brass hardware including 2 hook and eye closures, the original lock and the brass escutcheon! The instrument itself measures 11 inches wide on the large arc and the index arm is 10 inches long. The box measures 13 inches wide by 11 inches long and is 4 ½ inches thick. This offering is totally complete and in exceptionally fine, untouched, original condition. Truly museum quality. 1095 |
sextant |
back |
vernier |
signature |
box |
contents |
detail |
![]() |
3.55 EARLY AMERICAN BOXED COMPASS WITH PROVENANCE. Classic 2nd quarter 1800’s American boxed compass by perhaps America’s most famous makers and ship’s chandlers “THAXTER & SON. BOSTON” as boldly engraved on the center of the paper card backed with mica! The finely engraved compass rose is marked in points and half points with the cardinal and intercardinal points identified. The knurled brass cover retains its original old wavy glass held in with plaster of Paris. The compass is mounted in its solid brass weighted bowl slung in gimbals, mounted in its original mahogany box with copper fasteners. Remarkably, the box still retains its original sliding lid! The side is stenciled “DORY COMPASS.” The compass measures 3 1/8 inches in diameter while the box is 4 7/8 inches square and 3 ¾ inches high. Truly amazing original condition after nearly 200 years! A rare find offered at a ridiculously low price in these Coved times. This is a museum piece which could easily fetch $600 or more. One of the nicest examples of its type we have handled in over 40 years. Rare to find a ship's name. A keeper of the first order! 499 A faint pencilled inscription on the underside of the lid reads, "Sloop Rambler, Apr 1890, (Unlegible)." The sloop RAMBLER, essentialy a ketch, was homeported out of Gloucester, Massachusetts. She was 37.6 feet long and displaced 8.26 tons. ("List of Merchant Vessels of the United States," 1891 edition, Treasury Department Bureau of Navigation, page 216). Samuel Thaxter was born in 1769, and was apprenticed to William Williams. Thaxter initially started his business at Butler’s Row in 1796, moving to 49 State Street in 1806. The firm name changed to Samuel Thaxter & Son in 1826 located at 125 State Street, Boston. (M.V. Brewington, “The Peabody Museum collection of Navigating Instruments,” 1963, Peabody Museum, Salem, Massachusetts). |
box |
perspective |
dory compass |
![]() |
3.49 VERY RARE SEXTANT. Truly the Rolls Royce of navigational instruments! This double frame (also known as a “pillar frame”) sextant was made by “Henry Hughes & Son Ltd 59 Fenchurch St London” as engraved on the large arc. This type of sextant was invented by the renowned English instrument maker Edward Troughton in 1788. So functional and so precise was its construction that the form lasted well over a century! This amazing example is all brass meticulously fashioned with over 250 tiny parts, each individually hand-made in the old school tradition. All of the parts bear the hidden production number “40” and marks to align the one-of-a-kind hand-made fittings. Above the signature is the inscription “Platina & Gold 4927” indicating the large scale is engraved on platinum and the vernier scale is solid gold! The arc is calibrated in single degrees divided by 10 arc minutes from -5 – 160 effectively making this a “quintant.” The magnificent solid gold vernier scale is marked from 0 – 10 divided to single arc seconds.* To accomplish such a reading a sophisticated pivoting vernier magnifier with glass light diffuser is provided above the scale. This is the most complicated device of its type we have ever seen, and we have seen literally hundreds. The high luster solid brass frame is a piece of jewelry. It mounts the index arm with thumbscrew stop and endless tangent fine adjustment. The apex has the index mirror reflecting into the split horizon mirror. This instrument is complete with its full complement of 4 folding index filters and 3 horizon filters. The height adjustable sighting tube holder operates smoothly by means of a large knurled thumbscrew on the reverse. The reverse also has a sculpted lignum vitae handle and 3 brass “feet” for mounting in it box. The handle is fitted with a brass receptacle which would have allowed the sextant to be mounted on a stanchion for taking hydrographic sightings. The sextant is complete in its original hand-dovetailed mahogany box of exceptional size. It contains 4 sighting tubes, a screw-on eyepiece filer and a unique revolving eyepiece filer with 6 interchangeable settings. There is also a mirror box adjusting wrench. In the lid is the Certificate of Examination from the National Physical laboratory indicating “Class A” with matching “No. 4920” dated “1903.” The box has all brass furniture with two hefty closure hooks, a substantial folding brass handle and a brass label stamped “S NO. 4920.” The sextant measures 11 ½ inches on the large are and the index arc is 10 ¼ inches long. The box is 12 by 13 inches and 5 ½ inches thick. This is perhaps the finest instrument of its type we have had the pleasure of offering in our 40 years – navigational instruments being our specialty. Price Request
Provenance. An item's history is always bears on its relevant value. In that regard this instrument has a very interesting past. The Russo-Japanese War, 1904 – 1905, was fought between Imperial Russia and the Empire of Japan over their colonial ambitions in Manchuria and Korea. Russia had long sought a warm water port on the Pacific Ocean. Since the end of the first Sino-Japanese War in 1895, Japan feared Russian encroachment on its plans to create a sphere of influence in Korea and Manchuria. Seeing Russia as a rival, Japan offered to recognize Russian dominance in Manchuria in exchange for recognition of its dominance in Korea. But Russia refused, choosing to go to war after negotiations broke down in 1904. The Japanese Navy preemptively started the war with a surprise attack on the Russian Fleet in Port Arthur, China. Then of equal significance is the fact that this instrument was used in World War II by the Japanese Imperial Navy fighting the United States. The front of the box bears testament to this fact “From TOKYO, JAPAN +” indicating it was shipped back to the United States as a war prize by veteran Floyd Colvin. |
lid |
bottom |
hardware |
in box |
back |
detail |
tangent |
vernier |
gold vernier |
filters |
maker |
certificate |
LABEL |
![]() |
3.45 OCTANT. Genuine 19th century octant frame constructed entirely of rare solid ebony. This frame is complete with all of its wooden parts and a brass insert at the apex for the pivoting index arm. The reverse side has a receptacle for a trapezoidal inlay of ivory for the navigator to record his observations. This type of feature is commensurate with earlier instruments. The frame measures 11 inches tall and 9 ½ inches wide on the large arc. Circa 1850 or earlier. A perfect project for the do it your selfer on a minimal budget. 29 |
back |
![]() |
3.44 CLASS “A” SEXTANT. Highest quality second half of the 19th century English sextant signed “Wilson & Gillie, Bruce & Sons, Ltd., Cardiff. Barry Dock & Newport.” as engraved on the large arc. This handsome instrument is all brass with a complicated lattice frame and inlaid silver scales. The large arc reads from -5 to 155 degrees divided down to 10 arc minutes marked in 10 degree increments. The silver vernier scale inlaid on the index arm reads from 0 to 10 arc minutes divided down to 10 arc seconds, allowing a comparable reading. To give an accurate reading a complex pivoting magnifier is provided. Indicative of the best of these instruments, the index arm has a frosted glass light diffuser set above the vernier. This fine instrument is complete with both index and horizon mirrors and a full set of index and horizon filters. The telescope holder affords an adjustable height to accommodate the 3 sighting tubes. The reverse has a sculpted mahogany handle and 3 brass “feet” for mounting in its box. The original dove-tailed mahogany box contains the sighting telescopes along with the mirror box adjusting tool, the very rarely found tortoise shell magnifier, and a screw-on sun filter. What’s more, it retains the original functional skeleton key and lock! The brass lock is stamped “Two Lever Made In England Secure Hand Made.” This sextant measures 9 ½ inches long on the index arm and 10 inches wide on the large arc. The box is 9 ¾ by 11 inches and 5 inches thick. It has a folding brass handle and 2 hook and eye closures. As late 1800’s sextant go, this is the best of the best in terms of quality and condition. Totally complete and original! 895 |
detail |
back |
box |
open |
in box |
accessories |
scales |
label |
Signature |
magnifier |
![]() |
3.42 NAVIGATOR’s RULES. A very nice example of late 19th century rolling parallel rules made by the well-known English maker “J.A. Nicholl & Co.” as impressed in the top of the rule. This substantial, highly accurate navigational instrument is made of brass with a boxwood body. It consists of a heavy brass axel connected to knurled rollers on each end. These move freely allowing the rules to run over the face of a chart parallel to the course line. To assist the navigator in plotting, knurled brass knobs are provided on each end of the rules. This precision device is housed in its high quality mahogany box with machine dovetailing and interior felt supports. Two brass hook and eye closures insure the contents are secure. The rules measure 18 inches long by 2 ½ inches wide. Unlike trapezoidal parallel rulers, the extent of this ruler’s travel is endless. The box measures 19 inches long by 3 ¼ inches wide and 1 7/8 inches thick. Outstanding original condition in all respects. 249 |
bottom |
box |
maker |
![]() |
3.41 AMERICAN OCTANT. Extra nice second half of the 19th century brass octant by one of America’s most noted makers, “John Bliss & Co., New York” as engraved on the large arc. This quality instrument has an inlaid silver scale divided in degrees from -5 to 120 subdivided to 15 arc minutes. The silver vernier scale inlaid in the index arm is calibrated from 0 to 15 minutes providing a reading to an accuracy of 15 arc seconds. The braced cast bronze frame is in its original blackened finish. It supports the pivoting index arm 9 ¾ inches in length. The large arc is 8 ½ inches wide. The arm has knurled index stop and a knurled tangent fine adjust knob. To aid in taking a reading the arm is equipped with a pivoting vernier magnifier. This fine instrument is complete with both index and horizon mirrors, full set of index (4) and horizon (3) filters. It is equipped with a fixed telescope mount which accommodates either of the 2 sighting scopes – one peep and one telescopic. The back of the instrument retains its original early style sculpted mahogany handle and three mounting “feet.” It is totally complete with screw-on sun filter and mirror adjustment tool. The entire presentation is in an outstanding and original state of original preservation. The blackened finish is excellent throughout. The brass surfaces are clean and bright. This octant is housed in its original hand-dovetailed mahogany box with brass furniture 11 by 9 ½ inches and 5 inches thick. Complete with box lock, folding bail handle and closure hooks. Overall condition is truly exceptional. There are the typical age cracks in the solid wood panels of the box, expected of wood over 130 years old. But it is sound and very handsome in its original finish. A great find priced to sell. 585 |
box |
open |
in box |
back |
maker |
![]() |
3.38 RARE SURVEYING SEXTANT. Most important, very high quality marine navigational sextant which also served as an astronomical and hydrographic survey instrument. This magnificent all brass precision instrument is signed on the large arc “Cary, London 2842 Gold & Platina.” The large arc is calibrated in single degrees from -5 to 150 degrees divided by 10 arc minutes, effectively making it a quintant. The scale is beautifully engraved on solid gold overridden by a platinum vernier scale. The division of the vernier from 0 -10 allows for a reading to an accuracy of 10 arc seconds. Interestingly the sheet brass frame is very similar to the one invented by Edward Troughton in the 1780’s, in that it is secured to a second frame by screws for rigidity and accuracy. This amazing instrument has many unusual cutting edge features. The index arm stop and the fine adjust tangent screw are spring loaded, allowing a much smoother reading. To take the reading there is a small adjustable magnifier built into the index arm, as well as a small frosted glass window mounted just above the magnifier to provide maximum lighting for the reading. Above the magnifier, mounted to the index arm, is a bubble level which can be locked into place or allowed to swing free indicating the plane of the earth, also known as an artificial horizon. This sextant is equipped with its full set of 4 colored glass index filers and 3 horizon filters for viewing in different atmospheric conditions. Both the index and horizon mirrors are in place and functional. Attesting to Cary’s attention to minute detail, both are equipped with pin-adjusted screws which are covered by threaded knurled caps! This sextant has an adjustable height eyepiece operated by a knurled knob on the reverse. The eyepiece supports a long telescopic sighting tube which fits nicely into the holder with a bayonet twist. The back side of the sextant frame has 3 brass “feet” and a rosewood handle reinforced with brass. But there its commonality with other fine sextants is surpassed. It is mounted, through its handle to an exceptionally heavy and well-machined tripodal stand. The stand is signed “G. LEE & SON, THE HARD, PORTSMOUTH.” It is equipped with 3 knurled leveling screws on a folding base mounted with a support much like a library telescope. At the top is a revolving platform with a tangent locking screw and fine adjust stop. These are for precisely orientating the instrument to the heavens. The tilt of the sextant fore and aft is accomplished by 2 pivoting levers attached to the stand. Each is attached to a brass-encased lead counterweight. The action is flawless! The sextant itself measures 10 ¾ inches wide on the large arc and 10 ½ inches on the index arm. It stands 18 inches high and 10 ¼ inches wide on the base. Circa 1820. Absolutely outstanding condition. As rare as it gets. Museum quality. Price Request |
perspective |
detail |
back |
reverse |
sextant |
maker |
stand maker |
![]() |
3.37 IMPRESSIVE INCLINOMETER. Very finest quality ship’s pilothouse gauge used to measure the ship’s heel (roll) when underway and its trim when in port. This precision instrument has an enamel dial marked in individual degrees PORT and STBD. from 0 to 50. The first 20 degrees are further calibrated in ½ degree increments. The measurement is indicated by a black spade hand connected to internal gearing and a heavy brass weight. The dial is marked “HEEL” and “DEGREES,” then is signed “KELVIN & HUGHES LTD. Made In Great Britain” at the bottom. The dial is protected by thick beveled glass set into a heavy cast brass bezel. The bezel is fitted to a thick sold brass case with 3 mounting feet and a knurled locking knob at the bottom for disenabling the mechanism when not in use. This fine navigational instrument measures 9 inches in diameter an 2 3/8 inches deep. It is mounted to a rich hardwood backboard 12 inches in diameter. The backboard has one of our unique hanging brackets which provides secure suspension while allowing movement of the mechanism. Lovely, fully restored cosmetic condition in a bright brass finish. 695 |
perspective |
![]() |
3.30 MINIATURE SEXTANT. Truly extraordinary, if not completely unique, 2nd quarter 1800’s midshipman’s sextant (aka lifeboat sextant) made by the highly revered early English maker William Cary as beautifully hand-engraved on the large silver arc “Cary, London 968.” This amazing instrument is actually a semi circumferentor having a scale divided to a full 180 degrees of arc, sub-divided to 20 arc minutes! This was a spectacular feat of precision engineering at the time, attesting to Cary’s genius. It was not attempted by any of his contemporaries even on larger more easily calibrated instruments. This pristine all brass instrument is in its original blackened finish. The tangent fine adjust knob works in consort with the knurled index arm stop. The large scale is overridden by the index arm vernier scale calibrated to provide a reading down to an accuracy of an amazing 20 arc seconds! This was virtually unheard of for an instrument of its size at the time. It is a cutting age accomplishment literally akin to the moon exploration more than 125 years later! The index arm is equipped with an adjustable magnifier to view the reading. This compact navigational instrument has both index and horizon mirrors and a height adjustable sight holder which accommodates 3 telescopes housed in its box. Incredibly, 2 index filters and 2 horizon filers are also provided. On the reverse it has a sculpted solid ebony handle and 3 positioning “feet.” This diminutive instrument measures a mere 5 ¼ inches wide on the broad arc and 4 ½ inches long on the index arm. It is housed in its original rich African mahogany box with very fine hand-dove tailed construction measuring 5 ½ inches square by 3 ¼ inches thick. It is complete with all three sighting tubes and 2 eye piece filters. Incredibly the box lock is complete with its original skeleton key! Within the lid are two original labels. The first is by “HENRY PORTER Successor to the Late W. CARY.” The second is a hand-inked label dated 1888 indicating the correction of the index error in June 1888. This extraordinary presentation is worthy of the finest world class museum. In fact it must ultimately go to a museum as the trail of its past dictates. We are all caretakers of our prized possessions, but not owners in perpetuity. 3900 |
box |
in box |
contents |
back |
label |
signature |
![]() |
3.18 AZIMUTH INSTRUMENT. Genuine, highest quality ship’s navigational instrument made by the esteemed American makers, “NEGUS NEW YORK” as stamped on the bed plate and again on the maker’s tag on the box. This precision instrument is all brass with a blackened finish. It has an optical quality glass prism which rotates via two knurled brass knobs. Designed to be set atop the ship’s main steering compass in a binnacle, it has a magnifier set in a tube below the prism to enhance the current compass reading while at the same time providing an image of the sun or celestial body. Two pivoting sun shades are provided for looking at the former. A removable “line-of-sight” pole is provided, as is a bubble level for assuring totally accurate level readings. This instrument fits the top of a standard size 8 inch Navy magnetic compass. It measures 9 ¼ inches long by 3 3/8 inches wide and 8 ¾ inches high with the removable vertical post. Absolutely mint, untouched, original factory condition in its original dove-tailed wooden box with brass hardware measuring 10 1/4 by 7 ½ inches by 5 ½ inches thick. 199 |
box |
open |
instrument |
detail |
mirror & bubble |
maker |
![]() |
3.17 EARLY BOXED COMPASS. Rare, first quarter of the 19th century American boxed compass with the card signed around the center pivot “R. L. SHAW 22 WATER St NEW YORK.” This highest quality dry card compass has an engraved paper card overlaying mica. The central brass pivot has an agate bearing. Indicative of its early origins the card is only marked in points, not degrees. The cardinal and intercardinal points are identified down to the remaining individual points. 32 in all. North is denoted by an elaborate Fleur-de-lis. It is housed in its weighted brass bowl with old wavy glass cover slung in gimbals. The gimbal ring has two extended pivots which fit into brass V brackets mounted in the box. As such, the compass is easily removed for cleaning and inspection. The solid oak box is of exceptional quality, being of stout hand-dovetailed construction with it original chamfered sliding lid. When the lid is inserted it effectively locks the compass in place. The compass itself measures 5 inches in diameter. The box is 7 ¼ inches square and 5 ½ inches high. The compass is very lively and accurate, gimbaling properly within its box. Overall condition is excellent. There is some minor age toning on the card in the southern quadrant which in no way affects its quality or appeal. This is yet another exceptional museum-quality marine antique offered by this longstanding company, about 200 years old! SOLD |
perspective |
box |
compass |
![]() |
3.16/19.87 YACHT TAFFRAIL LOG. An amazing find! Late 19th century American patent log for small vessels made by the venerable nautical firm of Negus, New York. What is particularly remarkable about this set is its mint, UNUSED condition in the original box with instructions! The lovely instrument has a porcelain dial within its glazed brass housing. The dial is signed“ NEGUS PATENT LOG” and is calibrated on the periphery from 0 – 50 miles in one mile increments, marked by 5’s. The subsidiary dial at the bottom indicates tenths of miles. The log itself is equipped with a large brass bail handle and terminates in a free wheeling governor to which the log line and lead are attached. The “fish” (rotator) is solid brass and is marked “NEGUS M.” It is attached to approximately 10 fathoms of original cotton line. All of this is contained within the original cardboard box with interior “Directions” in the lid and outer decorative label reading “NEGUS PATENT LOG.” It is complete with its rarely-found separate instruction sheet entitled “HOW TO USE.” The box measures 10 inches long by 3 5/8 inches wide and 3 ¾ inches high. Condition of the contents is superb – factory new. The box shows signs of normal wear expected of an object over 100 years old. 595 |
box & Illustration |
in box |
fish |
label in box |
how to use |
log illustration |
![]() |
3.14/5.46 U.S. NAVY CLINOMETER. Authentic World War II fighting ship’s pilot house inclinometer made for the Navy by the John L. Chaney Instrument Company. The face of the Bakelite body is engraved: CLINOMETER
|
back |
![]() |
3.03 EARLY AMERICAN NAUTICAL COMPASS. Quite unusual maritime compass of especially small size produced by the short-lived American scientific and nautical instrument making firm of “FRYE & SHAW * NEW YORK*” as hand-engraved around the pivot of the compass card. This functional ship’s compass has a paper over mica drycard compass rose marked in single points of the compass with the cardinal and sub-cardinal pointes identified. North is designated by a classic fleur-de-lis. The brass pivot is of conical form reminiscent of compasses dating back to the 17th century! Also in keeping with tradition, the East point is embellished with yet another fleur-de-lis. The card is housed in its weighted brass bowl slung in gimbals mounted in its heavy brass cylindrical housing complete with the original press-fit knurled brass lid. The compass is very lively, accurate, and gimbals properly. The presentation measures 3 5/8 inches in diameter and 2 inches thick with the lid. Condition is absolutely outstanding and original, in all respects. Totally original. This is a sweetheart of an offering, worthy of any museum. Not particularly cheap, but worth every penny. Find another! 888 |
closed |
with lid |
gimbAled |
card |
![]() |
3.99 ANTIQUE HAND-HELD COMPASS. Very nice mid-19th century drycard compass made for the English speaking market. This diminutive all brass compass has an engraved paper card marked down to the single points of the compass with the cardinal and intercardinal points identified. North is denoted by a very fancy fleur-de-lis. The periphery is calibrated in single degree quadrants marked by 10’s, 0 through 90. At its center the card has a high quality brass pivot with inset agate bearing. It is housed under original old way glass within its all brass case with press-fit cover. The lid is engraved in script “DLS.” This compass is exactly 3 inches in diameter and 1 1/8 inches thick. Excellent old condition. The old magnetic compass bar is tired. But eventually it settles out to show North. A great old display piece. 229 |
with cover |
closed |
![]() |
3.97 NAVIGATOR’s PARALLEL RULES. A large and important set of ship’s navigators chart rulers from the early part of the 1900’s. This impressive set made of Bakelite with brass fittings measures 24 inches long by 3 1/4 inches wide, making it one of the biggest ever made! It is signed “H. HUGHES & SON LTD” on the left end and “MADE IN GREAT BRITAIN” on the right. Of special interest, due to its size, it has 3, not the typical 2 brass connecting arms. Following the invention of Capt. Fields, it is marked as a protractor with 90 and 270 at the center, radiating to 360 on the left and 180 on the right end. The lower limb is marked with “NESW, S and SENW” respectively. The action is tight and precise. Very handsome original condition. The rich brown tone of the Bakelite nicely enhances the yellow gold of the brass. A rare signed example which charted the way for many a successful voyage! 295 |
open |
great britAIn |
maker |
![]() |
3.92 RARE HISTORIC MINIATURE SEXTANT. Truly extraordinary, mid-1800s presentation sextant made by one of England’s most elite makers! This delightful little instrument is signed on the large arc in perfect hand-engraved script, “Troughton & Simms, London.” Of all brass construction with a V-shaped frame, the sextant has an inlaid silver arc reading from -5 to 160 degrees, effectively making it a quintant. Incredibly, these divisions along with the vernier scale on the index arm, allow this sextant to match the accuracy of it larger cousins, down to 20 arc seconds! A pivoting magnifier is provided for taking the reading. The index arm has a miniaturized version of a thumb screw stop and tangential fine adjust. The sextant is complete with its 2 horizon filters and 2 index filters in perfect condition. The index mirror and horizon mirror are in beautiful condition. The whole presentation is totally complete in its shaped rich mahogany box. The octagonal ebony handle screws into the frame with a secure fit. There are two optics, a peep and a telescope which fit into the height-adjustable sight holder. Rounding out the accessories, there are both sight tube filters, mirror adjustment tool, and the functional skeleton key for the brass lock. Of monumental importance for its value and appeal is the beautifully-hand-engraved presentation on sterling silver inlaid into the top of the box. It reads, “Presented at the Public Examination on the 13th of June 1851 to Gentleman Cadet, Henry Goodwyn by the Honble Court of Directors of the East India Company, as a mark of the Courts approbation of his attainments in Mathematics while at the Military Seminary.” The overall presentation is nothing short of phenomenal for an instrument 166 years old! Totally complete and virtually in the same condition when it was made. All surfaces are in their original bright brass lacquer finish. This is a nautical gem of the highest order, if ever there was one! Most certainly worthy of the finest world class collection and/or museum. 5350 |
perspective |
in box |
contents |
in back |
sextant |
vernier |
presentation |
makers |
![]() |
3.48 INCLINOMETER. Most unusual early 1900’s ship’s pilothouse inclinometer marked, “STRUMENTI NAUTICAL E. CHANZ, TRIESESTE,” engraved on the pendulum bob. This Italian-made ship’s instrument is unique in our experience, having a glazed brass body mounted to a sculpted hardwood backboard. As configured it is exceptional in that it is both functional and beautiful. It has a jet black background engraved with degrees of list in single degree increments from 0 to 51 port and starboard, marked by 10’s. The heavy, solid brass pendulum bob has a center line engraved on the tip of the pointer to precisely indicate the heel or list within a half degree of accuracy! The pivot at the apex is steel secured within a blackened brass fitting. It provides a very smooth, uninterrupted action. The instrument is housed in its sheet brass enclosure with triangular glass window, all of which is mounted to the one piece hardwood backboard in natural finish. In use this inclinometer was hung on the athwartships bulkhead in the pilot house in a prominent place. Insuring its secure attachment are three thick brass tabs. The one at the top is fixed, whereas the two at the bottom are slotted, cleverly allowing the instrument to be “trued up” if necessary. 11 inches tall by 12 ¾ inches wide overall. 2 ¼ inches thick. Excellent, fully restored condition. 695 The quaint seaport town of Trieste is located on the extreme northeastern border of Italy, at the head of the Gulf of Trieste on the Adriatic Sea. Throughout history it has been influenced by its location at the crossroads of the Latin, Slavic and Germanic cultures. Trieste was one of the oldest cities in the Habsburg Empire and in the 19th century it was the most important port of that member of the “Great Powers.” As a prosperous seaport in the Mediterranean, Trieste became the fourth largest city of the Austro-Hungarian Empire (after Vienna, Budapest and Prague). It underwent an economic revival during the 1930s and played a key role in the struggle between the Eastern and Western blocs after World War II. Today Trieste is one of Italy’s richest regions, serving as a center for shipping, shipbuilding and finance. |
INCLINED |
BACK |
TRIESTE |