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	TAFFRAIL LOG - "JOHN BLISS & CO" This is an old timer, one of the early model taffrail logs made by John Bliss circa 1900's. John Bliss was one of our premier instrument makers. This unit has a porcelain face with 3 dials that register different increments of distance traveled. The top of the porcelain face is marked with the maker's name: "John Bliss & Co Taffrail Log, New York U.S.A." We offer this in "as found" condition, with a lovely patina. A great decor item!	Item # 1280 Price: $398.00
	CIRCA 1830 HELIOGRAPH ON ORIGINAL TRIPOD Solid brass heliograph on original 42" tall tripod, circa 1830. Overall in very good condition. Heliographs were used to send Morse code by utilizing the sun with their mirrors. This one has 5" mirrors. Makers markings: "Helio 5" Mark V, l. A. M No. B 39090.	Item # 0023 Price: $695.00
	CIRCA 1830 BRASS HELIOGRAPH Solid brass heliograph on original tripod mount, circa 1830. Maker: "Helio 5" Mark V, No. B 40940. Heliographs were used to send Morse Code by utilizing the sun light by way of the 2 mirrors. Overall in very good condition, with mahogany legs. Measures 47.5" tall. Weighs 7 pounds.	Item # 0027 Price: $745.00
	CHELSEA BAROMETER Chelsea barometer in an all brass case, professionally polished and lacquered to a like-new condition. Glass face is 6", matching a Chelsea clock, with overall measurements 7.5" in diameter and 3.75" deep. Weighs 6 pounds. A beautiful round case barometer.	Item # 1335 Price: $595.00
	WARREN-KNIGHT USN THREE-ARM PROTRACTOR Warren-Knight USN Three-Arm Protractor in wood case. In absolutely awesome condition, this beauty has a paper label attached to the lid of its beautiful wood box, "Warren-Knight Co., Philadelphia, Instrument No. 6678." A metal tag attached to the outside of the box says, "Protractor, Three-Arm, Metal, Right-Handed." In magnificent condition!	Item # 1352 Price: $1,295.00
	WEMPE CHRONOMETER From Hamburg, a "Wempe" No. 8971 56-hour chronometer in its own handsome wood protective case with hinged lid that opens to allow winding. Complete with key.	Item # 2030 Price: $1,950.00
	BRITISH "MERCER" CHRONOMETER WW II era British Mercer 56-hour chronometer no.26062. The British Royal Navy's favorite. Thomas Mercer was one of the largest suppliers of instruments such as clocks and chronometers during WW II and thereafter. Handsome case. Runs well.	Item # 2033 Price: $2,150.00
	ANTIQUE PARALLEL RULE An antique parallel rule, made out of ivory, from the 19th century. Folded it is 6" long, extended it is 9.5" long. Quite beautiful and very rare.	Item # 0232 Price: $475.00
	ROYAL NAVY PARALLEL RULE WW II A World War II British Navy all brass rolling parallel ruler, marked with the traditional Royal Navy arrow and "Patt. 160100." Housed in its own box, it weighs 3 lbs. and is 18" x 2.3".	Item # 0237 Price: $350.00
	SIKES HYDROMETER SET BY W. R. LOFTUS English Sikes hydrometer set by W. R. Loftus in beautiful 3.75" x 8.25" X 2.25" Mahogany box. Makers name inlaid in middle of box lid: "Sikes' Hydrometer - Loftus- 312 Oxford St. London." Dates from the 4th quarter of the 19th century. The 6" long brass float and its complete set of 10 weights are all serial numbered Loftus no. 4275. The original thermometer is mounted on a bone plate, also signed " W. R. Loftus, Ltd", London.W. Inside the case is a brass float that may be fitted with weights calibrated in percent alcohol. This is used with the scaled mercury thermometer to determine the specific contents of spirits tested. The ship master used this instrument to check the salinity of the seawater by specific gravity, because as his vessel sailed from warm tropical waters to colder northern waters its buoyancy supposedly increased, thus allowing him to take on more cargo. Very collectible.	Item # 2008 Price: $595.00
	SIKES HYDROMETER by BUSS of LONDON Sikes hydrometer by Buss of London, displayed in a finely inlaid mahogany box which reads "Sikes Hydrometer-Buss-48 Hatton Garden-London" with 2 lions holding a royal shield above. The 7" brass float and its complete set of 10 weights are all serial numbered no. 26980 and marked with the maker's name Buss. The thermometer appears to have been replaced and on the bone plate bears the maker's name Joseph Long Ltd, London. Size is 8" x 3.75" x 2". Used to determine the specific gravity of liquids. The Ship Master used this instrument to check the salinity of the seawater, because as his vessel sailed from warm tropical waters to colder northern waters its buoyancy supposedly increased, thus allowing him to take on more cargo. A very fine item worth collecting	Item # 2016 Price: $575.00