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4 Mechanical Adding Machines, 1920s...
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4 Brunsviga Spoked-Wheel Calculating Machines...
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Burroughs Class 1, Style 6 Adding Machine, c....
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4 Mechanical Calculating Machines, c. 1930/40...
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4 Disc Adders...
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4 Spoked-Wheel Calculating Machines...
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5 Mechanical Calculating Devices...
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"Certa" Adding Machine...
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"Madas Model IX T Malaga" Calculating Machine...
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"TIM Mod. 1" (Time Is Money) Calculating Mach...
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"Saxonia" Universal Calculating Machine, c. 1...
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"Demos II/No. 3" Calculating Machine, 1923...
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"Brunsviga B 183 Triplex", c. 1955...
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8 Mechanical Adding Machines...
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2 Mechanical Calculating Machines, c. 1915...
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2 Bakelite Adding Machines "Aderes" and "Adix...
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3 Rack-and-Pinion and Chain Adders, 1920s...
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"Austria" Arithmometer, c. 1905...
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"Burkhardt Arithmometer", 1878...
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2 Mechanical Stepped-Drum Calculators, c. 192...
