British Admiralty Hydrographer's tubular beam drawing compass

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© The Board of Trustees of the Science Museum

Beam compass, tubular, divided on silver to 1/20th inch; reads by vernier to 1/1000th inch; clamp and slow motion; numbered to 45 on brass.

Details

Category:
Mathematics
Object Number:
1876-606 Pt1
type:
beam compasses
credit:
British Admiralty (Hydrographic Department)