U.S. Navy Cruising Calculator instrument, special canvas envelope, Bureau of Aeronautics, U.S. Navy. "Restricted". OD green colored, rectangular shaped pouch with single flap with grommet. Light purple colored edging with black markings. Created by Jason A. Smith Date Created 06/07/2017 Source National Air and Space Museum, Smithsonian Institution. Keywords Aviation; Instruments Rights and Restrictions Not determined
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