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"Arithmomètre Payen", c. 1880...
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"Arithmomètre Payen", c. 1880...
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4 American Calculating Machines...
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4 Mechanical Calculating Machines...
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Reuter's Calculating Machine, c. 1914...
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2 American Adding Machines...
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Collection of Electronic Table and Pocket Cal...
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15 American Cardboard Calculating Tools...
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Alpina Calculator, 1961...
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Web Adder and Golden Gem...
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SCM Cogito 240-SR Electronic Desktop Calculat...
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Sharp Compet 21 Electronic Desktop Calculator...
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Remington Rand EDC-3A Desktop Calculator, 196...
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4 Electric Calculating Machines with Printers...
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4 Electric Calculators with Nixie Tube Displa...
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Saxonia Calculator, 1895...
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Rema Calculator and Dactyle Demonstration Mod...
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Tate's Improved Arithmometer, c. 1905...
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The Meilicke Calculator, 1906 onwards...
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4 American Adding Machines...
