File:Cryptographic sliding rule-IMG 0533.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:46, 4 November 2011 | 5,616 × 3,744 (1.03 MB) | Rama | {{Information |Description={{Langswitch |en=Cryptographic slide rule used by the Swiss Army between 1914 and 1940. Cryptography collection of the Swiss Army headquarters |fr=Règle à calcul cryptograph |
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