British Admiralty Hydrographer's tubular beam drawing compass
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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)
