Jacques CANIVET - Graphometer in copper alloy, glass and ste - Lot 64

Lot n° 64
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Estimation :
300 - 400 EUR
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Result : 300EUR
Jacques CANIVET - Graphometer in copper alloy, glass and ste - Lot 64
Jacques CANIVET - Graphometer in copper alloy, glass and steel, signed "Canivet à La Sphère à Paris" and dated 1768. Openwork plate with engraved decoration of foliage. Scale twice 180° divided to ten minutes by transversals, compass with eight directions compass rose, alidade with vernier, foot with socket and ball joint (missing the wooden foot) In its original case with the shape (wear) Middle of the 18th century Height : 19 cm - Diameter : 29 cm On 30/01/1743, he is received " m[aîtr]e founder in earth and sand in Paris in favor of the privileges granted by the Kings to the workmen who live in the galleries of the Louvre " (3). 1758 was the year of his appointment as "engineer in mathematical instruments for the Gentlemen of the Royal Academy of Sciences", thus taking over from his uncle. Canivet undoubtedly recovered the La Sphére sign when Lordelle's workshop was sold in 1747, but he did not use it on his instruments until 1753 and until the end of his life.
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