View Original: | Britannic calculator, Guy's Calculating Machines Ltd, Wood Green, London - Ridai Museum of Modern Science, Tokyo - DSC07595.JPG (5414x2693) | |||
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Keywords: Britannic calculator, Guy's Calculating Machines Ltd, Wood Green, London - Ridai Museum of Modern Science, Tokyo - DSC07595.JPG en Exhibit in the Ridai Museum of Modern Science Tokyo University of Science Kagurazaka campus - 1-3 Kagurazaka Shinjuku-ku Tokyo 2015-02-20 02 12 22 own Daderot other versions cc-zero Mechanical calculators in the Ridai Museum of Modern Science Guy's Britannic calculators |