Cordingley's computometer, adding machine, c 1900.
Image number: 10327830
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:
- Science Museum/Science & Society Picture Library
- Date taken:
- 30 October 2003 09:16
- Image rights:
- Science Museum