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03 Sep

IMPORTANT CONTEMPORARY MS ACCOUNT OF RAMSDEN’S TELESCOPE EYEPIECE

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ENGLISH INSTRUMENTS IN ENLIGHTENMENT GENEVA: AN ILLUSTRATED MANUSCRIPT ACCOUNT BOOK WITH ASTRONOMICAL OBSERVATIONS, AS WELL AS BOTANICAL AND OTHER SCIENTIFIC CONTENT FROM THE PROMINENT GENEVA FAMILY OF PICOT, 1780–1850s   [RAMSDEN, Jesse (1735–1800); TROUGHTON, Edward (1753–1835); CAVALLO, Tiberius (1749–1809)] PICOT, Pierre (1746–1822); PICOT, Jean Gédéon (1750–1784) Notes on scientific instruments and astronomical observations [contained in:] a family accounts ledger dated 1780 to the title page and running to c.1800, with some later notes    Summary: An important manuscript account of Ramsden’s achromatic eyepiece, and a transcript Read More...
24 Mar

Large Architect / Drawing Set cased and signed I.Kern a Aarau In Suisse C.1800

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Large Architect / Drawing Set cased and signed on the cover top I.Kern a Anna In Suisse C.1800 Very complete. Just some crack to the green leather. Read More...
30 Jul

Rare and early Thury & Amey Swiss microscope in case numbered 119, late 19th

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This is an early model produced by the fine Swiss optical instrument maker, Thury & Amey, bearing the serial number 119 so datable from the late 19th century. Thury & Amey are, with the Société Génévoise d’instruments de physique et de mécanique, the best Swiss maker of microscopes from the late 19th century and early 20th century. The present example is an early example with a typical body shape. This is a mid-size example. It preserves two eyepieces with the initiales Read More...
05 Jul

Rare Electric Master Deck Watch in carrying box – Ulysse Nardin, 1943, Geneva, Switzerland

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At sea, having the right time on board is essential to be able to make a position.  Very rare and large deck watch in a case of stainless steel made by Ulysse Nardin. Special about this specimen is the electrical mechanism by which the watch can be used as a master timekeeper or mother clock. Stored in a three tier deck box with key and carrying case lined with green baize. Both made of mahogany. The white enamel dial with Read More...
21 Jul

DENTAL GUAGES FOR POSTS MADE BY CENORES & METAUX SA BIENNE

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 4 guages attached to a brass frame for the dentist to size the required post Read More...
15 Nov

~GOOD PART SET OF von RAPPARD SLIDES-BOXED~

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A near complete boxed set of miscellaneous Conrad von Rappard paper covered slides. Black and gold paper and hand writing indicative of the preparer c.1860. Numbers 1, 14 and 21 missing. Hand writing matches even on slides not using his trademark labels ( in French). Subject matter is mostly marine. Original box numbered 4, Preparations, Mscs. 21/24 in total. Labels and subject matter in good condition ( a couple re-numbered and one re-labelled ). Slides measure 2 5/8 x Read More...
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