Joseph BLATER - Lot 122

Lot 122
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Estimation :
200 - 500 EUR
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Joseph BLATER - Lot 122
Joseph BLATER BLATER's box of calculating sticks Calculation system based on Neper's sticks or Neperian rulers, whose purpose is to have a "simplifying table to make the resolution of multiplications and divisions more certain and easier". The theory of Neper's sticks was used in a number of variants, including the one developed by Joseph Blater in collaboration with Mr Steinhauser (royal-imperial advisor in Vienna). Publisher: Gauthier Villlars et fils, Paris Box of 32 sticks France, 1890 20.5 x 21 cm
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