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  • Terms: mathematics
/ 26
semi-circular protractor

semi-circular protractor

Edward Nairne
circa 1765
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
Golden Gem, stylus operated adding machine

Golden Gem, stylus operated adding machine

Automatic Adding Machine Company
circa 1915
sector

sector

Michel Cadot
1733
Adix adding machine, three places

Adix adding machine, three places

Adix Company
circa 1905
sector

sector

Jean-Louis-Jacques Baradelle
1750-1800
adding machine

adding machine

Reliable Typewriter & Adding Machine Company
circa 1930
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