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System 22 Electromechanical Telephone Exchang...
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Very Early Siemens & Halske Butterstamp Telep...
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German Telephone Switchboard, 1928...
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Group of Field Telephones...
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Commodore PET 2001 ("Blue PET"), 1977...
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2 Logarithmic Calculating Drums...
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Walther Diwa 32 Calculating Machine, 1970-72...
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Curta Type I Calculator, 1963...
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XxX ('X multiplied by X') Calculating Machine...
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Collection of Adding Machines, 1920-60...
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Arithmometer "Tim", 1909...
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Finnish Disc Adder by Hedberg, 1924...
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Arithmometer Hugo Bunzel, Vienna, c. 1902...
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3 Vertical Single-Cylinder Steam Engines, c. ...
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3-Inch Live-Steam Model of a Wallis & Steeven...
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2 Horizontal Steam Engines, c. 1950...
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Märklin 4158/7 Compound Steam Engine, c. 1930...
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2 Steam Engine Working Models...
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Stuart No. 400 Petrol Engine, c. 1920...
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Märklin No. 4097/91/9 Steam Engine with Dynam...
