Napier's Bones Ref: LH-H113
HEMISFERIUM Scottish mathematician John Napier invented this form of calculater in 1617 as a method of performing multiplications and divisions. It consists of a set of rods with numbers on them which became known as Napier's Bones. This set contains ten rods and a board which doubles as a handy storage case. Made from stout card with clear numerals, and complete with instructions, it is an interesting device to master.
Price: £35.00 (Including VAT at 20%)
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