Gunnery callipers, French, 17th century.

Image number: 10328301

Gunnery callipers, French, 17th century.

Callipers were used to measure the diameter of cannon balls and the bores of cannons. This example also incorporated scales for artillery calculations.

Image number:
10328301
Credit:
Science Museum/Science & Society Picture Library
Date taken:
21 October 2003 10:09
Image rights:
Science Museum