British Admiralty Hydrographer's tubular beam drawing compass
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.
- Materials:
- brass (copper, zinc alloy)
- Object Number:
- 1876-606 Pt1
- type:
- beam compasses
- Image ©
- The Board of Trustees of the Science Museum
