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Bunzel Arithmometer, c. 1910...
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Brunsviga Trinks-Triplex Calculating Machine,...
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"Cosmos" Spoked-Wheel Calculator, 1925...
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"The Adder", 1868...
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WW2 Brass De Mahe Torpedo Assessor, c. 1940...
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8 Calculating Tools...
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The Meilicke Calculator Model 10D, 1906 onwar...
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Single-Digit-Number Adding Device, 1920...
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9 Mechanical Calculating Machines, 1935 onwar...
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Burroughs Class 1, Style 6 Adding Machine, c....
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2 "TIM" (Time Is Money) Calculating Machines,...
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4 Mechanical Calculators, c. 1925...
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"Madas" Calculating Machine, 1913...
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Swiss "Conto" Model C Calculating Machine, 19...
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"Tasma Mod. C" Adding Machine, c. 1930...
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3 Writing Adding Machines, c. 1925 onwards...
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4 Writing Adding Machines, c. 1925...
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5 Mechanical Dial Adding Machines...
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5 Mechanical Adding Machines...
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Bunzel-Delton No. 7 Calculating Machine, 1908...
