Genaille's rods
- inventor:
- Édouard Lucas
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Licence
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LicenseGenaille's Rods: 11 Reglettes Financieres' for calculating
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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.
