A 19th-Century French yarn testing apparatus, the mechanism cage signed Burdet & Cie Lyon, with 2...
A Gurley portable balance, in mahogany case - 19ins. (48.2cm.) long; another box of Gurley weights...
An oxidised and lacquered brass Latimer Clark pattern window-sill transit instrument No. 656, with...
An 18th-Century American pattern Nuremburg-type maplewood drum microscope, unsigned, with slider and...
A 19th-Century lacquered brass polarising spectrometer, unsigned, possibly German, with rack and...
A mahogany dip-circle demonstration apparatus by W.G. Pye & Co. Cambridge, on mahogany base...
A 19th-Century brass surveying compass, signed on the dial Bery Pike & Son, New.York. Warranted...
A 19th-Century surveying compass, signed on the silvered dial B. Pike J 294, Broadway, New York...
A 19th-Century brass surveying compass, signed on the silvered dial L. Colton, New York., engraved...
A 19th-Century oxidised and lacquered brass surveyor's level, signed on the limb Kolesch & Co New...
An early 19th-Century lacquered brass gunner's quadrant with engraved arc and bubble level, with...
A 19th-Century brass drainage level, the limb signed EMPR DRAINING LEVEL by NEWTON & C. 3 Fleeet S...
An astro-spectroscope, in leather case by John Browning, 4¾ins. (12.1cm.) wide; a pocket...
A 19th-Century lacquered brass giroscope, signed APPS. 433. Strand. LONDON in mahogany case - 9¼ins...
A lacquered brass 2-prism spectrometer by Harvey & Peak, the table with engraved scale and vernier...
A late 19th-Century lacquered brass 1¾ Inch refracting telescope, unsigned, the 26¼ins. (66.7cm...
A late 19th-Century oxidised and lacquered brass surveying level, signed TROUGHTON & SIMMS LONDON...
A 19th-Century oxidised brass surveying level, signed Cary London, and further engraved W R Mansell...
A late 19th-Century Wheatstone-pattern telegraph receiver, the lacquered brass mechanism mounted on...
A 19th-Century brass giroscope of large size on turned pillar support and iron base - 21ins...
An early 19th-Century brass mounted Newton's Egg, with valve, 19ins. (48.2cm.) long...
A 19th-Century lacquered and oxidised brass twin prism spectrometer, unsigned, the table adjusted by...
A brass and iron hydraulic demonstration pump by Leon Luizard Paris, on oak base - 13¾ins. (35cm...
A late 19th-Century oxidised brass portable 1¾ Inch transit telescope, unsigned, possibly by Latimer...
A 19th-Century brass surveying compass, signed on the silvered dial E Kutz New York, the silvered...
A 19th-Century brass surveying level, signed on the limb P H Temple MAKER Boston No. 40., the...
A 19th-Century brass transit theodolite by Young & Sons No. 8706, the telescope with rack and pinion...
A 19th-Century brass surveying level, signed on the silvered compass dial S. Thaxter & Son, Boston...
An American pattern simple graphometer, the mahogany frame with compass needle, inlaid brass...
A 19th-Century oxidised brass surveying level, signed on the limb J Arnold & Co. Chicago Ill., the...
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