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  • Terms: mathematics
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calculator case

calculator case

Texas Instruments Incorporated
circa 1977
circular slide rule with Oughtred-type sundial reverse)

circular slide rule with Oughtred-type sundial reverse)

English
1633-1640
sector with folding square

sector with folding square

Benjamin Martin
1760-1770
sector

sector

Jacques Canivet
1743-1774
sector

sector

Nicolas Bion
1685-1715
ten-place, stylus operated add-subtract machine

ten-place, stylus operated add-subtract machine

French
circa 1850
sector

sector

Pierre Alexis Lasnier
1693-1740
eight-wheel pen-operated adding machine

eight-wheel pen-operated adding machine

David-Didier Roth
circa 1845
abacus

abacus

Japanese
circa 1950
Galileo's geometrical and military compass

Galileo's geometrical and military compass

Marc'Antonio Mazzoleni
circa 1604
sector

sector

John Worgan
circa 1690
sector

sector

Godelar
circa 1780
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