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Collection of 7 "Abacus"...
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Walther WSR 16, c. 1958...
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4 Spokewheel Calculating Machines...
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Collection of 5 "Feed-Rack Calculators"...
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"Fuller" and "Zeus"...
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"Alpina", 1961...
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Curta "Type I" Calculator, 1948...
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3 Calculating Aids...
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3 Logarithmic Calculating Discs...
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"Scribola" and 2 x "Comptator"...
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Star Adding Machine, 1922...
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"Archimedes Mod. C", 1912...
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