Details
LE MAIRE FILS, Paris
A brass graphometer with telescope on pivot, twin vernier scales on rotating limb, signed Le Maire Fils Paris, on pierced and engraved hemispherical arc with similar signature, divided 0-180 180-0, with compass box with engraved dial and steel needle, the underside with fixed telescope and tripod mount with ball socket and butterfly wing nut -- 15¼in.(38.5cm.)wide, circa 1775
A brass graphometer with telescope on pivot, twin vernier scales on rotating limb, signed Le Maire Fils Paris, on pierced and engraved hemispherical arc with similar signature, divided 0-180 180-0, with compass box with engraved dial and steel needle, the underside with fixed telescope and tripod mount with ball socket and butterfly wing nut -- 15¼in.(38.5cm.)wide, circa 1775