Large Graphometer by Le Gendre, almost unknown French maker, circa 1770
Large brass pinna graphometer signed on the mobile azimuth bar with the rare signature: \"Le Gendre, quai de l\'Horloge du Palais, Paris.
Diam. : 30 cm / Height: 15 cm
Le Gendre, Paris
Country of manufacture
The graphometer is complete with its compass with original needle, its stand and ball joint.
The arc of the circle is divided from 0 to 180 degrees and vice versa.
The thick plate is decorated with a rather original decoration of foliage but also geometrical patterns decorated with small circles; all underlined with red wax.
The large and elegant signature is engraved on the mobile alidade, also underlined with red wax.
The four sights are original.
Le Gendre is little known, only by a table sundial where he signs \”au pantographe\”. The instrument can be dated around 1760-1780. His address is the same or very close to that of the Baradelles, Jacques and Jacques-Nicolas. He could have been one of their apprentices.
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Established by Alexandre Piffault in 2014 and based in Paris at 5 rue de Condé, 75006, very close to Odéon, Le Zograscope specializes in antique and rare books in Science, Medicine and Technology, and rare antique instruments in the same fields. We have especially a strong interest in early and continental microscopy, early and special mathematical/drawing instruments, medical and surgical instrument, and rare technology.