View Original: | BriCal for Compound Addition, British Calculator - Ridai Museum of Modern Science, Tokyo - DSC07503.JPG (3131x2439) | |||
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Keywords: BriCal for Compound Addition, British Calculator - Ridai Museum of Modern Science, Tokyo - DSC07503.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 01 59 09 own Daderot other versions cc-zero Portable mechanical calculators in the Ridai Museum of Modern Science BriCal British Calculators |