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Curta Demonstration Model, c. 1994...
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6 Spoked Wheel Calculating Machines...
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6 Spoked Wheel Calculating Machines...
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2 Bakelite Adding Machines ...
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Soviet Electronic Calculator Iskra 122, 1971 ...
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Madas Model VII T Calculating Machine, 1925...
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3 Mechanical Calculating Machines...
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7 Spoked Wheel Calculating Machines...
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4 Spoked Wheel Calculating Machines...
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Calculating Drum and Tools...
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Thomas' Arithmomètre, 1862-63...
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XxX ('X multiplied by X') Calculating Machine...
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2 TIM (Time Is Money) Calculating Machines, 1...
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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...
