A boxed set of 'reglettes multiplicatrices' by Henri Genaille. There was a revival of interest in the calculating device known as Napier's bones in France in the late 19th century when Henri Genaille simplified their use. Instead of having to add the components in a given area, the user simply follows the pointers to multiply or divide. These sets of cards are known as 'Genaille's rods'.

Picture Reference: 10327842
Subject: SCIENCE & TECHNOLOGY > Mathematics > Calculating Machines, 19Th Century
Inventory No.: 1989-0427_0001
Credit: Science Museum

Keywords: 1800s, 1870-1913, 19th Century, Age Of Electricity, Arithmetic, Bone, Calculating, Calculating Machines, 19th Cen, Calculation, Calculator, Century, France, Genaille's, Genaille's Rods, Genaille, Henri, Instrument, Machine, Mathematical, Mathematical Instruments, Multiplication, Napier's, Napier's Bones, Napier's Rods, Object, Richardson, Claire, Rod

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