Callipers by H.gregory, c.1770
- maker:
- Henry Gregory
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LicenseGunners callipers, 6 inch by H.Gregory, brass 18th century
Science Museum Group
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum, London
Science Museum Group Collection
© The Board of Trustees of the Science Museum, London
Science Museum Group Collection
© The Board of Trustees of the Science Museum, London
Science Museum Group Collection
© The Board of Trustees of the Science Museum, London
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Gunners callipers, 6 inch by H.Gregory, brass 18th century. These callipers ere used for measuring the diameter of cannon balls, or by crossing the arms, the bore of a cannon..
Details
- Category:
- Mathematics
- Object Number:
- 1919-3
- Materials:
- brass (copper, zinc alloy) and steel (metal)
- Measurements:
-
overall (open): 3 mm x 172 mm x 165 mm, .094 kg
- type:
- calliper (gunnery)
- credit:
- Thomas H. Court
