Only Online Auction
Geneva, Sep 22, 2021
LOT 357
Louis-Guillaume Perreaux
Technological miscellaneous; precision measuring instrument; “Spheromètre de Perreaux”; cast-iron, steel and brass
CHF 500 - 1,000
EUR 500 - 950 / USD 550 - 1,100 / HKD 4,300 - 8,600
Cast iron, steel and brass, precision measuring instrument, called “Spheromètre de Perreaux” after its inventor, mounted on a tripod with a micrometric screw, a vertical scale of eleven centimetres (graduated “4-0-7”, divided in millimetres), a horizontal circle divided into 500 parts and a articulated segment of circle divided into 80 parts mounted with a pointer, used to measure the radii of curvature of surfaces (mainly used in the field of optics for lenses, mirrors, etc.); on a wooden base, under a glass dome; with two multi-shaped steel studs.
| Grading System | |
|---|---|
Grade: AA |
Very good |
Case: 3-8 |
Good Slightly scratched |
Brand Perreaux, Paris
Model “Spheromètre de Perreaux”
Year second part of the 19th century
Material cast-iron, steel and brass
Diameter 107 mm.
Dimensions 310 x 158 mm. (with glass dome and wooden base)
Height 260 mm.
Signature case
Biography
Perreaux, Louis-Guillaume
Almenêches (Orne), February 19, 1816 – Paris, April 5, 1889
French inventor; he called himself a “ingénieur-mécanicien” (mechanical engineer), active in Paris in the mid-19th century (14, rue Monsieur le Prince; 8, rue Jean Bart).
CONDITIONS AND INFORMATION FOR BUYERS
The purchase price payable by a buyer will be the sum of the final bid price plus the buyer’s premium, together with any applicable sales or compensating use tax. In addition to the hammer price, the buyer’s premium is payable as follows: 25% of the hammer price on each lot.Important notice – Special conditions Please look carefully at all the photos as they are an integral part of the description. Any defect not mentioned in the descriptions but visible on the photos will be considered as described and cannot lead to any claim. The dimensions are given as an indication and may slightly differ from the measures mentioned by the manufacturers especially for contemporary watches. The photos are not retouched. Colors may differ from reality. For timepieces, we guarantee neither the functioning nor the precision of the movement, nor the water-resistance of the case. In addition, please note that movements, parts of mechanisms or cases may be incomplete. The lots are sold “as is”, described to the best of our knowledge and cannot be returned. Once the online bid is placed by the bidder, it cannot be cancelled.