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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...
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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...
