Claude Langlois au niveau - Slide rule Antique inspired

Magnificent alidade in its black shagreen case. Signed C.Langlois at the level Estimated date 1723/1738 (see Rocca/Launey The Langlois-Lordelle-Canivet-Lennel dynasty " manufacturers of mathematical instruments in Paris in the 18th century." Very good condition of the case. The photos serve as description. 65.5 X 4.5 X 9 cm. Careful packaging. NO SHIPMENT OUTSIDE THE EUROPEAN UNION.

Estimation:€950

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