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Duboscq heliostat Silbermann type, c. 1885

The heliostat is designed to reflect a beam of sunlight in a fixed direction, and uses a clockwork driven mirror to counteract the apparent motion of the sun through the sky. The resulting steady beam of sunlight would often be projected into a laboratory for experiments requiring intense light, physical optics studies, microscopy, analysis of the solar spectrum, etc. This example has an octangular mirror, a clockwork mechanism, and tri-leg base with leveling screws. The inscription on the clock housing Read More...

Ecorché Larynx Otho Rhino Plaster 19TH Century

Ecorché Larynx Otho Rhino Plaster 19TH Century All the part are numbered. Original colors and good condition Read More...

Homeopathic Pharmacy set signed Derode & Deffes 60 Glass

Homeopathic leather set signed Derode & Deffes The set is complete with 60 glass with the drugs inside. All the caps with the name of the medecine. Read More...

Beautiful Delamarche Terrestrial Globe Dated 1866 In Good Original Condition

Beautiful Delamarche Terrestrial Globe Dated 1866 In Good Original Condition Read More...

8 Geissler Tubes In Original Case Electric Demonstration

Interesting 8 Geissler tubes with special form in its original case The Geissler tube is a glass tube invented by the German physicist (and glassblower) Heinrich Geissler in 1857, designed to visually demonstrate the principles of luminous discharge (non-magnetized plasma). Geissler tubes (the first gas discharge tubes) had a significant impact on the development of numerous instruments and devices that rely on electrical discharge through gases. The glass cylinder, partially evacuated, is sealed on each side around a metal electrode at each Read More...

Painted Plaster Anatomical Model Heart And Lungs 19TH Century

Charming Painted Plaster Anatomical Model Heart And Lungs 19TH Century mounted on wood. All the organs are numbered. Good original color Read More...

Microscope A Niche Charles Chevalier Ingénieur Opticien Palais Royal Paris

A Drum Microscope ( A niche ) by Charles Chevalier  French, c.1840, in laquered brass, engraved in script ‘Charles Chevalier Ingr. Optn. Brevete, Palais Royal 163 Paris’, rack and pinion focussing, microscope screw-mounted on mahogany case, height mounted 30cm   Read More...

19th c. Biberon Robert Paperweight: nursing bottles

Biberon Robert dominated the market for nursing bottles in 19th France. The key to their success was the development of the long-pipe bottle  that allowed the child to self-feed. We are offering a paperweight that was manufactured for the firm, perhaps for the desks of their executives and favored customers. Few seem to have survived as they are virtually absent from the Internet. This example in bronze, which has handsomely patinated over the years,  is 5 ” (12.5cm) in Read More...

Large French Protractor signed Baradelle l’Ainé C.1720

Large French Protractor signed Baradelle l’Ainé C.1720 Good condition Read More...

Interesting Graphometer signed Fieuset à Paris C.1750

Interesting Graphometer signed Fieuset à Paris C.1750 The graphometer is mounted on a brass ball joint adjusted with a finely worked butterfly thumbscrew. T The swiveling arm and four sights are in perfect condition with intact brass target lines. Rare Signature Very good condition.    Read More...

A dated 1682 coin scale.

A dated and signed 1682 coin scale made by Nicolas Raybay, Lyon, France. It have almost set completed. Some weights has been replaced and other added for Barcelona maker weights. In a box made in wood, one clasp missing. Overall in good condition.18 x 7 x 3 cm. Read More...

Ombrédanne anaesthetic Ether inhaler By Collin c. 1930

An Ombrédanne-type ether inhaler by Collin, made in the 1930’s. This type of ether inhaler was introduced in 1908 by Professor Louis Ombredanne (1871-1956), a Paris born paediatric and plastic surgeon. The inhalator is signed by Collin Dépose No 23553 and will be dated at the 1930’s. Measurements 24 x 18 x 13 cm. Find out more on www.vanleestantiques.com Read More...