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"Archimedes Mod. C", 1912...
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Star Adding Machine, 1922...
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"Scribola" and 2 x "Comptator"...
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3 Logarithmic Calculating Discs...
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3 Calculating Aids...
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Curta "Type I" Calculator, 1948...
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"Alpina", 1961...
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"Fuller" and "Zeus"...
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Collection of 5 "Feed-Rack Calculators"...
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4 Spokewheel Calculating Machines...
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Walther WSR 16, c. 1958...
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Collection of 7 "Abacus"...
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Replica of Wilhelm Schickard's Mechanical Cal...
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"BriCal – The British Calculator Mod. B", 190...
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3 Disc Adding Machines...
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Russian "Original Odhner", c. 1905...
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2 Calculating Devices...
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"Calculimetre" Calculating Disc, c. 1875...
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"Kuli" Calculating Machine, 1909...
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"The Rapid" and "Golden Gem"...
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"Universal-Adder", 1904...
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"The Locke Adder", 1901...
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2 Fast Adders...
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"Multifix", c. 1950...
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Calculating Drum by Ernst Billeter, Zurich, S...
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"Mercedes-Euklid Mod. 1", 1905...
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Swiss "Conto" Model C Calculating Machine, 19...
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"Tim Unitas", 1912...
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"Robotron Mod. 314", 1972...
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Olympia CD-400 Desktop Calculator, 1970...
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"Certa" Adding Machine...
