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| View Original: | Otis King cylindrical slide rules, view 1 - Ridai Museum of Modern Science, Tokyo - DSC07491.JPG (-3635x4166) | |||
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| Keywords: Otis King cylindrical slide rules, view 1 - Ridai Museum of Modern Science, Tokyo - DSC07491.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 57 09 own Daderot other versions cc-zero Slide rules in the Ridai Museum of Modern Science Otis King's Patent Calculator | ||||
