22. Barometers:

22.47  RARE WEST COAST BAROMETER.  Very finest quality aneroid barometer with the silvered brass dial signed "LOUIS WEULE Co. SAN FRANCISCO."  The near perfect open face dial is marked in inches of atmospheric pressure from 25 to 32 in 2/100th increments marked by tens and in whole inches.  It bears the classic bold weather indications "STORMY RAIN CHANGE FAIR and VERY DRY."  At the bottom of the dial it is marked "Holosteric (PNHB) Barometer."  The barometer reading is shown by the delicate blued steel indicator needle.  The dial is protected by a beveled glass crystal with brass set needle rove through the glass, connected to a fine knurled brass knob.  The beautiful, complex inner workings of the movement appear through the large central aperture.  The solid bronze case is in excellent original condition with a mellow patina acquired over the last 100 years.  The back is stamped (PNHB).  At the top is a substantial pivoting suspension loop for hanging.  5 ¼ inches in diameter by 2 inches thick.  6 ¼ inches tall overall, inclusive of the suspension loop.  Still functioning perfectly and very accurate.  As clean and as original as they come!  495

Heinrich Emil Ludwig "Louis" Weule was born in Germany in 1841 and immigrated to America during the time of the Civil War.  Trained as a machinist in the old country he began his career working for other scientific instrument makers in and around San Francisco.  In 1892 Weule was able to purchase the business of Charles Pace of London.  The firm, which dealt in nautical charts, instruments and supplies, was founded by Pace in 1862.  After the 1906 San Francisco earthquake and fire, Weule reorganized the company under the name Louis Weule Company.   For over 3 decades the firm was the most prominent ships' chandler and maker of scientific instruments on the west coast.  Weule died in 1927

The first practical aneroid ("without liquid") barometer is generally attributed to Parisian, Lucien Vidie in 1843, who was awarded an English patent for his device in 1844.  Vidie's patent rights expired in 1859, allowing other makers to produce instruments.  The most successful makers in France were Naudet, Hulot & Cie, who reportedly made 20,000 instruments between 1861 and 1866.  1

Another reference to the firm was made by Middleton who states, "...there were several makers soon after the patent expired in 1859, the most successful being Naudet, Hulot, & Cie.  According to Le Roux they made 20,000 aneroid barometers between 1861 and 1866.  They called them baromètres holostériques...  references occur in the continental literature to Naudet barometers and to holostric barometers for the rest of the nineteenth century.  They acquired a great reputation and were widely imitated." 2  Middleton goes on to state,  "For many purposes aneroids continued to be made - and are indeed still made - of a form very like that arrived at by Naudet, Hulot & Cie about 1860." 3   In the Appendix is an entry for a barometer held in the collection of the Smithsonian Institution, Washington, D.C.  It reads, "230,002  A "Holosteric  Barometer- Compensated, "made by Naudet & Co. Marked on the back of the case, U.S. Signal Service" 4 indicating manufacture around the time of the First World War.

Surprisingly, little is written about the innovative and prolific Paris aneroid barometer maker, Pierre (alternatively "Paul) Naudet, although it is known that his firm was begun in 1861 and  continued producing aneroid barometers into the 1930's.  The dating and meaning of the markings HBPN (alternatively PNHB) are less clear.  An entry for a barometer sold on eBay indicates the markings refer to "Hulot, Pertius & Naudet, Paris, barometer makers in the 1930's.  However Andy Demeter, writing about the history of the Chelsea Clock Company notes, "With the possible exception of recording barometers, Chelsea did not assemble holosteric or aneroid movements for their barometers preferring to purchase them from the legendary French maker, Pierre (alternatively Paul) Naudet.  His firm's trademark is typically found in a circle on these early barometer dials with the letters "HBPN" as an abbreviation for "Holosteric Barometer, Pierre Naudet." 5  On page 220 a barometer dial is pictured with the caption, "1909 Pierre Naudet barometer."

1. Edwin Banfield, "Barometers Aneroid and Barographs," 1985, Baros Books, Wiltshire, England, p. 21.

2. W.E. Knowles Middleton, "The History of the Barometer," 1964, The Johns Hopkins Press, Baltimore, p. 407.

3. Ibid. p. 409.

22.44  CASED ALTIMETER/BAROMETER.  Extra large cased turn-of-the-century gentleman's pocket altimeter and barometer.  This English-made piece is signed in script with the retailer's name "Adolf Frese, Los Angeles."  This impressive precision instrument is of the very highest quality, featuring an aneroid barometer movement connected to a very fine indicator needle.  The lovely silvered brass dial is calibrated in atmospheric pressure in inches of mercury from an amazing 20.08 to 31 in 5/100th increments marked by whole inches.  Encircling this readout is the altimeter scale which reads from 0 to 10,000 calibrated in 50 foot increments.  The precision of the delicate needle is such that an extrapolated reading with a finer accuracy can be observed.  The dial is also marked "Compensated" which means it is corrected for temperature changes.  The beveled glass crystal protects the dial and is seated in the rotating knurled bezel which indicates the altitude at any given reading.  The heavy, solid brass case is in its original gilt brass finish.  This barometer is equipped with a folding suspension loop at the top and an adjustment feature on the back for setting the accuracy of the reading.  It fits neatly into its wooden case covered in rich Moroccan leather, lined in silk and satin.  The case hinges on the left and closes on the right with a spring-load button latch.  This represents the largest of its type of "pocket barometer" ever made.  It measures 2 7/8 inches in diameter and 7/8 inches thick.  Rare to find in such good overall condition.  695

22.46  DUTCH  STORM GLASS.  Very unusual 19th century Dutch weather instrument known as a "Donderglas" or "Thunder Glass."  In the vernacular it is called a "weather glass."  The hand-blown glass vial is hung from a small hole in the top and is filled half full of water.  In use it functions on the principle that variations in atmospheric pressure will cause the water level in the spout to rise and fall.  A fall in pressure will cause the level in the spout to rise and vise versa.  The beautifully-fashioned perfect glass flask with graceful swan's neck spout measures 7 1/2 inches tall.  It is mounted in its original, unique turned wooden stand 11 ½ inches tall and 4 inches in diameter.  The decorative finial at the top allows the brass mounting hook to rotate or to stop in a specific position.  The high quality hook has a spring-loaded locking lever to hold the glass securely in place.  A most interesting and different display.  We have had a couple of old weather glasses in our 40 years, but never one with its original stand.  For the barometer enthusiast, this is a must!  SOLD

"Like bakbarometers, thunder glasses are characteristically Dutch instruments especially produced in the Southern Netherlands.  Quite probably the production got underway sometime in the early 17th century."  (Berte Bolle, "Barometers," 1978, Argus Books, Ltd., Watford, Herts, England).

22.43  WALL BAROMETER.  Exquisite mid 19th century wall barometer of French manufacture.  This lovely mercury tube barometer has a rosewood case with porcelain register and thermometer dials.  The barometric dial is marked in centimeters of mercury atmospheric pressure from 73 to 79 cent8imeters calibrated by 10th and marked by 10's from 73 to 79.  The bottom of the porcelain dial is signed "LEGRUIS au R."   The inlaid thermometer above with a large red alcohol bulb and a porcelain scale is marked "Thermometer" at the top.  Confirming its age, the scale is calibrated in degrees Reaumur and Centigrade on either side of the bulb.  It registers from -30 degrees Centigrade to +60 with numerous temperature indications in French.   The movement of this wall barometer contains what is known as a "J Tube," filled with mercury  which supports a floating bob.  It is linked to an incredibly fine rack and pinion movement which operates the indicator needle.  This arrangement is found in only the highest quality stick barometers.  Most are fitted with a simple pulley and string arrangement.  The lovely porcelain dial is calibrated in mercurical centimeters of atmospheric pressure from 72 ½ to 79 ½ or the equivalent of 28 ½ to 31.3 inches.  It bears weather indications "TEMPETE, VARIABLE, and TRES SEC" among others.  The center is adorned with a "snowflake" design overlaid by the ornate gold set needle and the simple black indicator with arrow tip.  The set needle is operated by a detailed cast brass "acorn" knob at the very bottom of the barometer body.  The unglazed face is seated in a very ornate gilded bezel measuring 7 ¼ inches in diameter.  The barometer body is beautiful, rich rosewood with a very delicate string inlay border on all edges.  37 inches tall by 7 ¾ inches wide.  The original hanging bracket is at the top.   The overall condition is absolutely exquisite in all respects.  Both the thermometer and thermometer functions operate well and are very accurate.  969 Back to Top

Because this item contains mercury, shipping may be a problem.  Please consult with us if interested.

22.41  BAROMETER / ALTIMETER.  Very finest gentleman’s pocket altimeter with the dual function of being a weather forecasting barometer.  The silvered brass dial reads “DOLLOND & AITCHISON, LONDON.”  This precision scientific instrument has an extremely fine indicator needle linked to the aneroid mechanism within.  It has two scales.  The inner dial indicates the atmospheric pressure in inches of mercury from 12 to 31 calibrated in 1/20th inch increments marked in whole inches.  The outer dial registers the altitude from 0 to 10,000 in 50 foot increments marked by thousands.  The outer dial rotates to enable the observer to set the altitude to the local reading.  The back is provided with a small aperture to adjust the barometer function.  The dial is also marked “COMPENSATED” indicating the mechanism was made to account for temperature fluctuations.  The highly complex movement is contained within its original blackened brass (gun metal) case with a folding suspension loop at the top.  The unit fits snugly in its original protective leather-covered wooden case with satin lining.  The instrument measures a mere 1 7/8th inches in diameter by ½ inches thick.  Inclusive of the suspension ring it measures 2 ¾ inches high.  The case measures 2 3/8th inches in diameter and 1 inch thick.  Absolutely outstanding original condition in every respect and very, very accurate!  A real gem.  349

Peter Dollond began his optical business on Vine Street, near Hatton Garden, London in April  1750.  Two years later his father, John, joined him in the venture.  The partnership thus formed, became famous worldwide for the quality of their output.  In 1761 John Dollond was appointed optician to King George III and the Duke of York and Albany.  Nearly a century later the firm was awarded the Medal of Excellence for their scientific instruments at The Great Exhibition 1851 in London.

In 1889, James Aitchison established his business in Fleet Street.  In 1927 Dollond & Co. merged with Aitchison & Co, to form Dollond & Aitchison.

Dollond & Aitchison was one of four major British companies that controlled 70% of the United Kingdom's market for glasses and contact lenses.  Dollond & Aitchison were Royal Warrant holders and supplied glasses to the Queen and Duke of Edinburgh.

22.40   BAROGRAPH.  Superb quality, third quarter 19th century British recording barometer by one of the most famous makers of the era, “LENNIE EDINBURGH” as engraved on the bedplate.  This precision scientific instrument is as lovely as it is accurate.  The complex solid brass mechanism is gold washed.  It consists of a stack of 8 flexible aneroid bellows attached to a linkage which transfers motion to an inking stylus at the end of a long metal trace.   The bellows expand and contract with changes in atmospheric pressure, the extent of which are measured on the revolving clockwork drum.  To set the reading a knurled thumbscrew is at the top of the cross bar of the support columns.  A long arm attached to a knurled knob on the bedplate allows the trace to be disconnected from the drum when not in use.  The drum is encompassed by an interchangeable paper chart calibrated in barometric inches of mercury from 28 to 31 in 5/100th increments on the a axis.  The x axis is calibrated in days of the week divided by 2 hour intervals.   The bottom of the chart is signed “LENNINE 40 PRINCESS STREET EDINB.”  Inside the drum a  jeweled clockwork with built-in winding key revolves the drum precisely once a week to produce a continuous and accurate record of atmospheric changes.   These observations were important for the British Meteorological Office (the “Met” formed in 1854) to help forecast weather at sea for the safety of seamen.  To these ends a large number of blank and actual inked charts are contained in a drawer below.  The mechanism is housed in a handsome splined solid mahogany case with thick beveled glass on all 5 sides.  An articulated brass arm allows the case to be opened and held in place while servicing.  A small bottle of special red recording ink is held in its receptacle.  The entire unit measures 14 ½ inches long by 9 inches wide and 8 3/8 inches tall.  Outstanding original condition.  The clockwork has just been fully serviced by a professional watchmaker. Back to Top 1495

Eliza Lennie, widow of James Lennie, worked as an optical instrument maker at 40 Princess Street, Edinburgh, Scotland from 1857-1901.  Her husband, James Lennie, began the firm as an optical instrument maker in 1840 until his death, at which time his wife took over the business and traded under the name.  (Edwin Banfield, “Barometer Makers and Retailers 16660-1900,” 1991, Baros Books, Trowbridge, Wiltshire.)

9.90 / 22.40  POCKET COMPENDIUM.  Remarkable 2nd half of the 19th century English gentleman’s traveling instrument containing FOUR scientific functions in one!  This compact device is signed in engraved script “L. Braham & Co. 142 Southampton Row LONDON.”  On the front it features 2 functions: a weather barometer and an altimeter.  The barometer function, reading effectively from 28 to 31 inches of atmospheric pressure, is marked “RAIN, CHANGE, and FAIR.”  The scale is calibrated in inches of mercury down to 5/100ths.  The second function, the altimeter, indicates the altitude in feet from sea level to 8000 feet in 50 foot increments marked by thousand’s.  Both are indicated by a very fine needle pointer.  To aid in the reading, the revolving knurled bezel is equipped with a built-in “bubble” magnifier.  The reverse of this amazing instrument has a curved mercury thermometer reading from -5 to 165 degrees Fahrenheit.  Central to the display is a functional compass made on Singer’s Patent.  The high quality card is made of mother of pearl with a central agate pivot.  The compass is marked in single points of the compass with the cardinal and intercardinal points identified.  North is indicated by a lyre symbol.  Remarkably this miniature compass has a caging device operated by a tiny lever to lock the card in place when not in use!  The instrument is solid brass with traces of original gilding.  It has a pivoting suspension loop at the top and a small aperture at the bottom for setting the barometer reading.  A mere 2 inches in diameter and 1 inch thick.  All functions are working and very accurate.  The best of its type we have seen in our 40 years.  695


Samuel Barry Singer, a master mariner form Southampton, England patented a unique compass card in 1861.  He intended for his design to be used in ships’ compasses, but the dials were most often used in pocket compasses.  His innovation incorporated a distinctive half black, half white card.  The sharp contrast was designed to make reading easier in low light conditions.  The North half of the dial is black and the South white.  The lyre symbol may have had a metaphorical meaning, representing Vega, known as the Harp Star, one of the brightest stars in the Northern Hemisphere in the constellation of Lyre.

Kornelia Takacs, “Compass Chronicles,,” 2010, Schiffer Publications, Atglen, Pennsylvania.

22.19  MOUNTAIN BAROMETER.   Scarce early 1900’s American-made aneroid barometer for use at altitude.   This lovely precision weather instrument has a white enameled brass dial protected by a glass face.  The bottom of the dial is signed “Taylor Rochester, N.Y. U.S.A. / Toronto, Canada.”  At the top it is marked “PAT. AUG. 18-1914.”  The dial is calibrated in inches of mercury reading from 26 to 31 in tenths of inches, divided by 2/100ths.  It is also marked with the standard weather indications “~STORMY – RAIN –CHANGE * FAIR – VERY DRY~.”  A blackened steel indicator needle points to the precise reading, overlaid by a brass set needle connected to a knurled brass knob through the glass.  The barometer is contained within its lovely solid bronze case with pivoting suspension loop at the top.  The unique feature of this barometer is on the back.  Rotating the knurled brass plate moves the entire  movement within, thus setting the reading for a given altitude.   The rim of the plate is calibrated in “FEET” of altitude from “3500 to 7000” in 100 foot increments.  Instructions read “ROTATE THIS PLATE UNTIL ARROW ON CASE POINTS TO THE ALTITUDE OF YOUR LOCALITY.  PATENTED AUGUST 18-1914.”  5 ¼ inches in diameter and 2 ½ inches deep.  6 ¼ inches tall overall including the suspension loop.  This fine instrument is fully functional and in a virtually pristine state of original preservation.  395

22.33 RARE AMERICAN STICK BAROMETER! Extremely rare sailing ship barometer made by the pioneer nautical American makers, “E & GW BLUNT, NEW YORK” as precisely-engraved on the ivory register. Truly an incredible find! This classic old fashioned ship’s gimbaled barometer is made entirely of rich rosewood with ivory scales and all brass hardware. Distinctively American, its simple, slim design is elegant yet functional. The registers (scales) are beautifully-engraved. The left scale exhibits the weather indications “FAIR, CHANGE, RAIN.” On the right the scale is calibrated from 27 to 31 inches divided by tenths. A sliding vernier, activated by an ivory rack and pinion knob just below, is divided from 1 – 10 providing a precise readout to one 1/100th of an inch. The register is overlaid by its original old wavy glass retained with rosewood moldings. The mid-body of this instrument has the original brass gimbal which pivots within the barometer body in ivory grommets. The gimbal ring fits nicely into the solid brass yoke attached to a turned rosewood mount, allowing the barometer to swing properly in a seaway. Below the gimbal is the mercury thermometer with ivory scale marked in single degrees Fahrenheit from 18 to 108 F. Perhaps the most unusual aspect of this stick barometer is its innovative open cistern – a real departure from contemporary English and French barometers of the time, and evidence of the Blunt brothers’ cutting edge manufactory. The open cistern is protected by old wavy glass in keeping with the register. The compartment is backed by an ivory slab engraved “PATENT MARINE.” It contains the original hand-blown glass tube protected by two silvered brass covers. This simple but effective arrangement is similar to the “J” tubes used in terrestrial mercury wall barometers of the era. Despite its relative simplicity compared with English Victorian barometers of its age, this working ship’s instrument has a lovely pediment at the top and a sculpted, curvaceous cistern cover on the bottom. The entire instrument is in a remarkable state of original preservation considering it is at least 175 years old! It measures 41 inches high overall and 4 inches wide at the widest. It projects 7 inches outward from the bulkhead as mounted. Shipped without mercury. However arrangements can be made to fill the instrument and make it fully functional and accurate. This is certainly a Smithsonian candidate, if not already in that collection. 2887 Back to Top

The sibling partnership of Edmund and George William Blunt was formed in 1824 in New York under the name E. & G. W. Blunt. They were sons of Edmund March Blunt, famous publisher of “Blunt’s Nautical Almanac” of Newburyport, Massachusetts. Following a disastrous fire in 1811, the elder Blunt moved to New York City, where he continued his publishing. According to M.V. Brewington in “The Peabody Museum Collection of Navigating Instruments”…”The firm was possibly the most progressive in the United States, thanks perhaps to George joining the U.S. Coast Survey.” By 1833 they were the American agents for the foremost British chronometer makers. In 1836 they set up their own astronomical observatory in Brooklyn. By 1850 they were publishing a nautical almanac of their own and had agents in 20 East Coast and Gulf cities. In 1856 they completed a dividing engine on George’s design. They had many other accomplishments in the nautical realm. Edmund died shortly after the Civil War and George retired a year later. The firm sold out to John Bliss & Co., in 1871. George died in 1878.

22.24  “MOUNTAIN” BAROMETER.  Quite scarce early 1900’s American “Mountain Barometer” with the unique feature of being adjustable for altitude (elevation).  This precision instrument was made by the Tycos Company of Rochester, N.Y. as signed on the bottom of the white enameled dial.  The dial is calibrated for atmospheric pressure  in inches of mercury spanning the wide range from 25 to 31 inches in 2/100th increments marked by 10’s.  It bears the standard weather indications “@STORMY @ RAIN, CHANGE * FAIR @ VERY DRY @” with the added notations “LOW & HIGH.”  At the top it is marked “PAT. AUG.-18-1914.”  The reading is indicated by a fine blued steel needle overlaid by a brass “set needle” with knurled brass knob rove through the beveled glass cover.  The body of this instrument is solid bronze in its original flawless golden lacquer finish.   The back of this instrument bears the rare patented feature which allows it to be adjustable.  It consists of  a knurled disc calibrated in feet of elevation from 0 to 3,500.  The engraved instructions read, “FOR A SEA LEVEL READING ROTATE THIS PLATE UNTIL THE ARROW ON THE CASE POINTS TO THE ALTITUDE OF YOUR LOCALITY.”  The back also has an aperture for a set screw to further adjust the movement.  The top is equipped with a pivoting brass loop for hanging.  5 ¼ inches in diameter and 6 inches high overall.  Absolutely perfect condition is all respects.  The precise mechanism is lively and accurate.  The best!  349

22.27  FRENCH BROMETER with THERMOMETER.   Finest quality late 19th century aneroid barometer made by the highly respected Parisian barometer making firm of Paul Naudet as indicated on the small “PNHB” logo at the top of the dial.  This handsome example has a silvered open face which frames the complex movement within.  The dial indicates atmospheric pressure in inches of mercury calibrated from 27.8 to 31.2 in 2/100th increments marked by 10ths.   It shows the standard weather indications of “STORMY, RAIN, CHANGE, FAIR and VERY DRY.”  At the top of the aperture it is marked “Made In France” and “HOLOSTERIC BAROMETER” (without liquid).   Of much added value and desirability is the fact it is fitted with a large curved mercury tube marked “FAHRENHEIT THERMOMETER” registering an exceptionally broad range of -18 to 148 degrees in 2 degree increments. The barometric read-out is made by the very precise blued steel indicator needle, overridden by the brass set needle attached to a knurled knob.  The knob runs through the beveled glass crystal with its old wavy glass.  The solid rose bronze case is of traditional form with a pivoting suspension loop at the top for hanging, but also fitted with a stout brass hanger for hard mounting to the ship’s bulkhead top and bottom.  This lovely antique barometer has just been professionally serviced and both functions are guaranteed to be lively and accurate. 5 ¼  inches in diameter,  2  1/8 inches deep and 6 1/8 inches high overall.  In our 35 years handling antique barometers, there are no finer examples than those marked PNHB.  For an accurate, functional instrument which is very decorative and has value as an antique, this is it!  The best.  595

22.21  CARVED SHIP's BAROMETER. Very handsome mid-1800s Captain’s cabin  barometer undoubtedly from a sailing ship.  This lovely example combines form and function in a  shipboard instrument which has a hard-fired white porcelain dial calibrated in inches of atmospheric pressure from 27.7 to 31.3.  It also has more unusual weather notations reading:  GALES, STORMY WET CHANGEABLE, FINE, CALM, and SET FAIR at the top and -.FALLS.-MORE WIND FROM S.WLY., S.E., S.W. ARM, WET (then the trident) and, -.RISE.- N.ELY, N.W.N.E OR LESS WIND. COLD DRY.   Key words are highlighted in RED.  Of added appeal, and certainly increasing its value as a real ships barometer, is the fact that an old fashioned anchor is depicted at the center of the dial and Neptune's trident is shown at the bottom.  While unsigned, it is our opinion that this barometer was made by Martin of Swansea, a noted English ships' barometer maker circa 1860.  It has a brass bezel with thick beveled glass through which the brass set needle overlies the black indicator needle.  The body of the barometer is carved in the traditional ropework manner out of rich dark oak.  The original heavy brass hanging bracket is countersunk on the reverse.  The entire instrument measures 9 ½ inches in diameter and 3 1/4 inches thick, while the dial itself is 6 1/4 inches across. Outstanding, pristine original condition throughout!  Fully functional and accurate.  Truly a fantastic example.  579

According to Edwin Banfield in Barometer Makers And Retailers 1660-1900, 1991, Baros Books, Wiltshire, England, Felix Martin was a watch and clock maker in Swansea from 1850-1870.  We had and sold a nearly identical barometer with a plain, but signed dial by this maker.

22.25   IDENTIFIED U.S. MARITIME COMMISSION BAROMETER.  High quality World War II vintage merchant ship’s barometer made for the U.S. Maritime Commission by the famous American scientific instrument making firm of “Taylor Instrument Companies, Rochester, N.Y., U.S.A.” as marked on the pristine white dial.  This pilot house barometer is marked “PRESSURE Inches of Mercury Compensated” from 27.7 to 31 .3 in 2/100th increments marked by 10ths swept by a blackened steel indicator needle.  The dial is protected by its glass crystal housed in the original black Bakelite ship’s bulkhead-mounted case measuring 6 ½ inches in diameter on the flange.  This sealed unit has a pivoting brass cover on the back which protects the aperture provided for adjusting the reading.  It is the first such feature of this quality we have yet encountered in a barometer.  Attached to the barometer is an old work tag stamped “MACK BRUNTON BRYAN” then penned in old ink, “Merchant + Miners Trans. Co.”  This barometer is in excellent working and cosmetic condition in all respects.  Its indication of the barometric pressure is lively and accurate.  349

22.06  ANTIQUE BAROGRAPH.  Extraordinary, scientific grade turn-of-the-last-century weather instrument made by the well known English makers “Short & Mason, London.”  This lovely, fully functional instrument embodies the long-standing British penchant for form and function.  As such, the precision mechanism with gilded brass works and hardwood housing is a thing of beauty.  It employs 12 evacuated silvered bellows connected with a complex linkage system to a stylus holding an inking pen.  The linkage is all brass with steel pivots as mounted to the gilded brass bedplate.  It is decoratively-engraved with its makers, “Short & Mason London.”  The quill-type pen records a trace on the revolving drum.  A lever mounted on the front of the bedplate allows the pen to be lifted from the drum when not in use.  The brass drum is turned by a jeweled clockwork mechanism which runs for 8 days on a single wind, making one revolution per week.  To these ends there is a Fast/Slow adjustment feature under the removable brass cover and a separate winding key.  The interchangeable chart paper graph encompassing the drum is marked from 28 to 31 inches of barometric pressure in 1/10th increments on the “y” axis and is marked Monday through Sunday in 2 hour increments on the “x” axis.  The glazed wooden case is made of rich mahogany with all brass fittings and is supported on 4 wooden feet.  The sturdy scalloped base is complete with pull-out drawer containing 2 compartments.  The forward compartment is filled with original, unused gummed graph charts.  In addition there is an original pamphlet reading “S and M STORMGRAPH RECORDING BAROMETER, Directions For Use.”  The second compartment is for storing recorded charts.  The upper removable case contains its original old glass on all 5 sides.   This instrument measures 14 3/8 inches long by 8 ½ inches wide and 8 1/2 inches high.  Complete with the original ink vile with ground glass stopper and contents!  The entire presentation is in an outstanding state of original preservation, fully functional (the clock keeps good time) and is complete with at least 20 spare recording charts in pristine original condition.  Price Request 

22.09  WEATHER GLASS.   Authentic hand-blown glass weather instrument known as a weather glass, storm glass or thunder glass, as found in the homes of sea captains from the 17th through the19th centuries.  This exacting copy consists of a one piece glass vial with a hanging eye at the top, a curved swan’s neck spout, and terminates in a bulbous glass bottom.   It is complete with a hand-wrought hanging bracket of copper and brass.  In use the glass is partially filled with water so that the level can be seen within the spout.  Weather changes accompanied by varying atmospheric pressure are evident in the rise and fall of the water level in the spout.  The hanging bracket measures 12 inches tall overall and the glass is 9 inches tall and 3 ½ inches wide.  Perfect condition.  49

Bert Bolle in “Barometers,” 1982, Argus Books, Watford, Herts, England discusses the Thunder glass or “donderglas” stating, “The title of “weather glass” is more apt than “barometer” in the context of the instrument shown.  A barometer is a measuring instrument, as such, has a scale; a thunder glass does not have a scale.  Therefore the term “weather glass” is more suitable for this, nonetheless, decorative antique."

"In the illustration, one can see that the glass is hung from a small hole at the top and is filled with liquid.  This can be water with a dye if desired.  The instrument, about 10 inches high, functions on the principle that variation in air pressure will cause fluctuation in the water level in the spout.  Without a doubt, this instrument is only partly reliable as it is greatly influenced by variations in ambient temperature.  However, if the thunder glass is hung in a place where variations in temperature are minimized, it is an excellent indicator of variations in air pressure."

"Thunder glasses were characteristically Dutch and production got under way sometime in the early 17th century."
This example comes complete with the original instructions printed when we commissioned an old-school glass blower to make a few of these instruments in 1983.  Since then they have been in storage for more than 30 years!

22.13  BAROMETER / ALTIMETER.  Large, extra nice late 19th century English gentleman’s traveling barometer with the dual function of being an altimeter. This unusually large portable instrument is in the form of a pocket watch with bow and retains its bright brass finish.  The silvered brass dial is hand-engraved.  It is calibrated from 25.5 to 31 inches of barometric pressure, divided down to 2/100ths of an inch.  It is marked “Compensated” and “Made in England”   The outer rim of the dial is marked in “FEET” from 0 to 5,000 divided down to amazing 20 foot increments!  To set and record a reading the rim revolves.  This is provided with pinpoint accuracy by the extremely fine steel indicator needle which is little more than a hair’s width in diameter!  This instrument is complete within its silk and satin-lined, hinged wooden case with Moroccan leather cover.  A small spring-loaded lever with brass button latch secures the case when closed.  3 ¼ inches in diameter and 1 ¼  inches thick.  The dial itself measures 2 ½  inches across.  Fully functional and accurate.  595