This image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseGenaille's Rods: 11 Reglettes Financieres' for calculating
Science Museum Group
© The Board of Trustees of the Science Museum
Genaille's Rods: 11 "Reglettes Financieres" for calculating interest by Henri Genaille and Edouard Lucas, 1885, in cardboard box
Les Reglettes Financieres'; financial rules for calculating interest, invented by Henri Genaille and Edouard Lucas and published by Eugene Belin & Son, 1885 Genaille's rods are a variation on Napier's bones which make multiplication simly a matter of following line pointers..
Details
- Category:
- Mathematics
- Object Number:
- 1989-861
- Materials:
- card
- Measurements:
-
overall: 15 x 120 x 180 mm
- type:
- arithmetical calculator
- credit:
- Delehar, P.
