Horizontal sundial with compass, original box, Butterfield type, c.

Approx. 71 x 63 mm, brass, gilt, signed, with original box, which, however, no longer closes; sundial in good condition. Nicolas Bion (c. 1652–1733) was a famous French mathematician and engineer. He worked as a royal purveyor of mathematical instruments to Louis XIV and Louis XV.

Estimate:$562.27

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