Slide rule, Bate's Interest Scale, published 1st June, 1824 by R.B. Bate, London, 1824; paper scales on wood, two slides, one on each face; size 18 7/8" x 2 7/8" x 3/8"
Paper slide rules became popular in the early 19th century. This example is by Robert Brettell Bate, a well-known maker, and can be used to calculate interest at various rates for various periods for various principals, or lump sums.
- Object Number:
overal (flat): 15 mm x 535 mm x 75 mm, 0.2 kg
- ready reckoners
- Lt. James F. Godwin
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