La Multi, prototype of French calculating device based on Napier's bones, seven figures, c. 1920. This is a prototype of an instrument which did not prove successful. Napier's bones, a calculating device invented by John Napier in 1617, allowed the user to add instead of multiply.
Details
- Category:
- Mathematics
- Object Number:
- 1986-566
- Materials:
- brass (copper, zinc alloy), metal (unknown), mahogany (wood), paper (fibre product), textile and wood composites
- Measurements:
-
overall: 105 mm x 310 mm x 175 mm, 0.9 kg
- type:
- napier's rods
- credit:
- Brieux, Alain