Cordingley's computometer, adding machine, c 1900.

Image number: 10327830

Cordingley's 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.

Image number:
10327830
Credit:
Science Museum/Science & Society Picture Library
Date taken:
30 October 2003 09:16
Image rights:
Science Museum