Rhabdological abacus, in case. Invented by H. Good

Made:
1822-1824 in England

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Rhabdological abacus, in case. Invented by H. Goodwyn, 1822. With manuscript description by Olinthus Gregory (RAS No.89). Presented to the Royal Astronomical Society in 1824 by Goodwyn family.

Details

Category:
Mathematics
Object Number:
1931-341
type:
abacus and calculators
credit:
Royal Astronomical Society