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Luer wooden cheek retractor, circa 1861

A very rare “cheek retractor” after the model invented by Luer around 1860-1861. Our model is made of wood and is not signed. Was it a demonstration model or were all retractors made of wood? We have not been able to find any other examples. According to the publications of the time, the cheek retractor was intended to “facilitate the exploration of the internal part of the cheeks and mouth”. This instrument, which does not seem to have had great success, Read More...

Aluminum and ebonite stethoscope, circa 1920

A heart stethoscope made of aluminum with a detachable ebonite plate. The instrument is French and dates from the 1910s-1920s. The stethoscope measures 15.3cm in length and the ebonite plate 6.3cm in diameter. Very good condition. Read More...

Silver Butterfield dial by Langlois, Paris in green shagreen case.

A fine example of a silver Butterfield type sundial in the original green shagreen case. The finely engraved dial has Premier cadran (first dial) engraved with the city names and latitudes on the back.  This is the only example I have seen in a green shagreen case with silver catches both still there. Piere Langlois was a very good maker and this dial dates to around 1740 Read More...

Original copper printing block of the Janssen’s photographic revolver – 1875

An unique copper printing block representing the Janssen’s photographic revolver and used in May 1875 in the newspaper La Nature. An important precinema apparatus. “Jules Janssen was permanently lamed by an accident in early childhood. He studied at the University of Paris, and in 1865 became professor of general science in the school of architecture. He was an enthusiastic observer of eclipses. In 1870, when Paris was besieged during the Franco-Prussian War, he fled the surrounded city in a balloon so Read More...

A fine complete and cased Fineman/Hildebrandsson nephoscope by Pellin, circa 1910

A quite rare example of a Fineman-/Hildebrandsonn type Nephoscope by F. Pellin, circa 1910   The nephoscope was invented in the nineteenth-century to measure the altitude, direction and velocity of clouds. Seventeenth- and eighteenth-century methods of determining cloud height required triangulation from the ends of two baselines. Other techniques involved using a map to trace the passage of cloud-shadows over the countryside, or a camera obscura to measure a cloud’s angular height and bearing from 0º north, (known in astronomy as Read More...

French Surveying Circle whole signed Gourdin à Paris C 1770 or Dutch Circle

Whole Circle Or Dutch Circle Signed Gourdin In Paris C.1770″ Beautiful entire circle or Dutch geometry circle Pierre Gourdin active in 1771 and successor of Jean Baptiste Nicolas Bion, son of the famous manufacturer of scientific instruments Nicolas Bion Address: ‘Au Quart de Cercle’, Quai de l’Horloge 32. The entire circle was first described by Gemma Frisius (1508-1555) in 1533 in her work Libellus de locorum describendorum ratione. Equipped with a compass, this instrument would later be called a “Dutch Read More...

FRENCH CHART OF THE BALEARIC ISLANDS

SHIPPING BY FEDEX, DHL, ETC. FULLY TRACKED.   Contact Email:   [email protected] Read More...

Miner compass cased By Ingénieur Chevallier Place du Pont Neuf 13 Paris C. 1842

Beautiful mine compass in its original box, transport shape, worn on the belt. The compass is signed Maison de l’Ingénieur Chevallier Opticien Place du Pont Neuf 15 Paris. The store moved to 15, place du Pont-Neuf later in 1842. The attribution of this date is based on Chevallier’s catalog of 1842, which provided this address. A notice published in March 1843 reminded the public of the store’s move, suggesting it may have occurred in late 1842. Chevallier’s catalog indicates Read More...

French Delamarche geocentric armillary sphere

A French unsigned Delamarche geocentric armillary sphere, around 1800. These types of armillary spheres are also referred to as Ptolemaic and are made to the vision that the earth was the centre of the universe. The globe is made of a structure of wooden rings (armille) which are placed in horizontal positions to represent from north to south: the circle of the Northern Arctic Pole, the Tropic of Cancer, the equinoctial line or Equator, the Tropic of Capricorn and finally Read More...

Hourglass in straw marquetry made in France circa 1720

Hourglass in straw marquetry with geometric decorations on the hexagonal bases and around the rim. Rounded side openings. One bubble glass flask with two bulbs, one with 2 bulbs. Joint in fabric covered with threads partially gilded, and sand in eggshell. Dimensions : height of 15 cm x diameter of 6.2 cm. France circa 1720. Read More...

Charming Surveying Graphometer Clerget Au Butterfield Paris C 1750

Charming Surveying Graphometer signed Clerget Au Butterfield a Paris C 1750 A BRASS GRAPHOMETER, circa 1750 sign. CLERGET PARIS AU BUTTERFIELD. The protractor engraved with 2 grade scales 0-180. Central compass box with wind rose, directions, blued-steel needle and graduated around the edge. Base and alidades with upright sights, ball for ball-and-socket mounting,  Dimensions 23 cm. GRAPHOMETER, Paris, um 1750. Sign. CLERGET PARIS AU BUTTERFIELD. Very lovely floral engraving .       Read More...

Museum inclining Meridian finder and sundial invented by Julien Leroy signed By Jacques Lemaire 1746

A rare sundial invented by Julien Le Roy signed by Jacques Lemaire dated 1746. Julien Le Roy was Director of the French Société des Arts in the Early Eighteenth century He work closely with Jacques Lemaire. The sundial is engraved with the latitudes of twenty Europeans cities. Same model in The Greenwich Museum and in The Arts et Métiers Museum. See Daumas  Scientific instruments of the 17Th and 18 Th Centuries and their makers. Read More...