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Napier's Bones

Napier's Bones

1 5/8" x 1 3/16" x 3/4"
John Napier (1550 - 1617) was an extremely clever Scottish mathematician, most famous for inventing natural logarithms. The computing device he developed for lattice multiplication, known as Napier's Rods or Napier's Bones, is much more well-known, and more fun.

I've packaged a set of Napier's Bones in one side of a two-sided book-like container, with a copy of E.W. Hobson's 1914 lecture "John Napier and the Invention of Logarithms 1614" in the other side. The whole is bound in a blue and black Indian paper printed in vaguely geometrical curves.

This product was added to our catalog May 23, 2017