Lot 507

A collection of a set of survey instruments, a pocket loupe and four measuring devices
Nicolas Bion, Paris, 97 x 28 x 20 mm, circa 1720
Small set of goniometer demi pied de Roy, pair of compasses with steel points and pencil holder, in a leather-covered box
Case: brass.
In addition to another goniometer and three proportional compasses there is a beautifully ornamented loupe in a silver case by Boin-Taburet, dating from around 1890.

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