Gunnery callipers, French, 17th century.

Gunnery callipers, French, 17th century.
Callipers, used for artillery purposes, French, 17th century. Callipers were used to measure the diameter of cannon balls and the bores of cannons. This example also containd scales for artillery calculations
 
Currently on display in:
Mathematics
Year made :
17th century
Inventory number :
1883-138