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History
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An Odhner machine made under the management of W.T. Odhner in Saint Petersburg before 1900
An Odhner machine made under the management of W.T. Odhner in Saint Petersburg before 1900
Brunsviga
Brunsviga
Thales
Thales
Original design
Original design
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Four of Pascal's calculators and one machine built by Lépine in 1725, Musée des Arts et Métiers
Four of Pascal's calculators and one machine built by Lépine in 1725, Musée des Arts et Métiers
Replica of Schickard´s calculator
Replica of Schickard´s calculator
Detail of a replica of an 18th-century calculating machine, designed and built by German Johann-Helfrich Müller.
Detail of a replica of an 18th-century calculating machine, designed and built by German Johann-Helfrich Müller.
A mechanical calculator from Anton Braun, dated 1727
A mechanical calculator from Anton Braun, dated 1727