Gunner's callipers, early 18th century.

Hills, Jennie

Gunner's callipers, early 18th century.
3 4 c m
40cm
actual image size: 32cm x 26cm

Description

These callipers can be used to measure the diameter of cannon balls or, with crosed arms, to measure the bore of a cannon. The arms are inscribed with tables containing information relating to artillery. The instrument was made by Thomas Wright (d 1767), who styled himself mathematical instrument maker to George, Prince of Wales, in 1718.

Image Details

Artist
 
Image Ref.
 
10328260

© Science Museum / Science & Society Picture Library

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