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Keuffel & Esser 4083-3 Log Log Vector Duplex Slide Rule National Museum of American History. Click to open image viewer. Keuffel & Esser Model 4083-3 Duplex Slide Rule, Front View CC0 Usage Conditions ...
Pamphlet, K & E Log Log Duplex Vector Slide Rule No 4083 National Museum of American History. Click to open image viewer. Pamphlet, K & E Log Log Duplex Vector Slide Rule No 4083 CC0 Usage Conditions ...
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