Napier's Bones Set
Not all calculators are created equally! Invented in the early 1600s by John Napier, this manually operated calculating device revolutionized multiplication using rods and a lattice frame. While the original Napier’s Bones sets were made from bone, this reproduction is made of quality wood components. Base measures 7” x 7” and makes a perfect cover for the lattice frame and rods. Rods are made from 1/8” thick alder and are laser engraved. Two sets of rods are included (0-9) and measure 6” long. A brief background and instructions for use are included. A great way to challenge your math students, while providing a fun look at primitive technology! ~Deanne
Napier's Bones was designed in 1617 by John Napier a Scottish Mathematician. In its day it was a wonderous device that simplified complex multiplication and other math processes such as long division and square roots. It was essentially the first calculator and was in common use for nearly 3 centuries.
Set has 2 full sets of rods #0-9 (20 rods in total) that can be both used and stored in the attractive base with cover. Rods are made from 1/8 thick alder and are deeply laser engraved. The base is a 7" x 7" square and the rods are each 6" long.