Berechenbar (Napier’s Bones)
$29.59
Description
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.
| Object | Tool for doing math multiplying |
|---|---|
| Difficulty | Level 7 – Challenging |
| Brand | Jean Claude Constantin |
| Types | European Wood Puzzles, Jean Claude Constantin |
| Dimensions | 5.3 in x 4.7 in x .1 in / 13.5 cm x 12 cm x .3 cm |
