Lower part of a brass sciatère, signed F. Rousselot in Paris - Lot 415

Lot n° 415
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300 - 500 EUR
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Result : 510EUR
Lower part of a brass sciatère, signed F. Rousselot in Paris - Lot 415
Lower part of a brass sciatère, signed F. Rousselot in Paris, France, circa 1670-1680. Diameter: 7.7 cm; unfolded length: 47 cm. This model of sciatère is described in Bion (Traité de la construction et des principaux usages des instrumens de mathématique, 1709, plate 25, figure 4, pages 306-307). The latter does not give the name of its inventor. Although incomplete of its gnomon, the sciatère retains its ball-and-socket joint and wall-mounting spike.
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