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Berechenbar (Napier's Bones)
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Berechenbar (Napier's Bones)

ObjectTool for doing math multiplying
DifficultyLevel 7 - Challenging
BrandJean Claude Constantin
TypesEuropean Wood Puzzles, Jean Claude Constantin
Dimensions5.3 in x 4.7 in x .1 in / 13.5 cm x 12 cm x .3 cm

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Product Info

A laser-cut wood tool for multiplying large numbers. The initial state shows a regular times-table from 1 to 9, but by sliding the rods it is possible to multiply large numbers with little effort.

Made in laser-cut wood by Jean-Claude Constantin. Jean-Claude Constantin lives in Germany, where he designs and manufactures many different laser-cut wood puzzles, as well as metal puzzles and magic tricks.

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