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Swiss "Conto" Model C Calculating Machine, 19...
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"Mercedes-Euklid Mod. 1", 1905...
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Calculating Drum by Ernst Billeter, Zurich, S...
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"Multifix", c. 1950...
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2 Fast Adders...
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"The Locke Adder", 1901...
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"Universal-Adder", 1904...
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"The Rapid" and "Golden Gem"...
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"Kuli" Calculating Machine, 1909...
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"Calculimetre" Calculating Disc, c. 1875...
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2 Calculating Devices...
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Russian "Original Odhner", c. 1905...
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3 Disc Adding Machines...
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"BriCal – The British Calculator Mod. B", 190...
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Replica of Wilhelm Schickard's Mechanical Cal...
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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"...
