"Graphometer Signature Rare Godelar In Paris XVIII Th -geometry-hydrography."
Beautiful finely engraved graphometer decorated with foliage and interlacing. Unusual signature of Godelar in Paris. C 1750 Compass finely engraved with the fleur-de-lis and comprising eight cardinal points. The first graphometer and its protractor rule (1597) The graphometer is an ancient instrument for measuring angles. Mounted on a ball joint, it makes it possible to identify angles between objects located in the same plane. It is an instrument of geodesy and topography. Original patina. To clean.