12-inch Walnut Octant by Gilbert & Company

Description:

12-inch Walnut Octant by Gilbert & Company, London, with brass index arm engraved Gilbert & Co. London and bone vernier engraved 0-20, bone scale calibrated 0-95 degrees, unmarked name plate, sun screens, horizon mirror and peep sight and turned brass feet.
Estimate $500-700

Brass and mahogany in old surface, peep sight bent, bone scale loose and minor losses on the vernier, vacant maker's plate probably replaced with surface anomolies surrounding the area.

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