'La Multi' calculator, c 1920.
Image number: 10327822
Prototype of La Multi, a French calculating device which did not prove succesful. The 'La Multi' calculator was based on Napier's bones, developed by John Napier (1550-1617) in the early 17th century, which allowed the user to add instead of multiply.
- Image number:
- 10327822
- Credit:
- Science Museum/Science & Society Picture Library
- Date taken:
- 30 October 2003 09:16
- Image rights:
- Science Museum
