Computer will be used for the "Time and Navigation" exhibit White plastic dead reckoning computer used for aerial navigation. The circular computer has three discs for ground speed, mileage and course. Created by Eric Long Date Created 01/04/2013 Source Smithsonian National Air and Space Museum, National Air and Space Museum Original Photography, NASM Acc. No. 2012-0026 Keywords Aviation; Instruments Rights and Restrictions CC0
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