Cordingley's computometer', adding machine, c 1900.

Cordingley's computometer, adding machine, c 1900.
Cordingley computometer adding machine c.1900. The Cordingley adding machine was one of several simple devices introduced around 1900. It is based on Blaise Pascal's (1623-1662) design of 250 years earlier.
 
Currently on display in:
Mathematics
Year made :
1890-1910
Inventory number :
1980-123