878 Free Photos of Calculator

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Tomas De Colmer Arithmometer, 1821 - Ridai Museum of Modern Science, Tokyo - DSC07591

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Tates Patent Arithmometer, Charles & Edwin Layton, 56 Farrington Street, London - Ridai Museum of Modern Science, Tokyo - DSC07588

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US Navy 081029-N-4954I-002 Chief Aircrew Survival Equipmentman Rob Ramsey calculates flight times

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US Navy 090323-N-7478G-012 Quartermaster Seaman Tim Davidson and Quartermaster 3rd Class Dexter McFarland calculate moonrise on the bridge of the amphibious command ship USS Blue Ridge (LCC 19)

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