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6 Spoked Wheel Calculating Machines...
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6 Spoked Wheel Calculating Machines...
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6 Spoked Wheel Calculating Machines...
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6 Spoked Wheel Calculating Machines...
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Thomas' Arithmomètre, c. 1875...
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The Millionär Calculator, 1893 onwards...
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3 Calculating Machines...
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Curta "Type I" Calculator, 1948...
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4 Mechanical Calculating Machines...
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6 Spoked Wheel Calculating Machines...
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2 Stepped-Drum Calculating Machines...
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6 Spoked Wheel Calculating Machines...
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6 Spoked Wheel Calculating Machines...
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6 Spoked Wheel Calculating Machines...
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Austria Model VI Arithmometer, c. 1910...
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6 Spoked Wheel Calculating Machines...
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Arithmometer "Archimedes Model C 16", 1906...
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Calculating Disc in Traveling Case, c. 1925...
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Special Calculator "E.A.-UHR 61", 1965...
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Bunzel Arithmometer, c. 1910...
