Projection ruling machine of the U.S. Coast and Geodetic Survey. During the Second World War, the projection for literally thousands of maps was drawn by this machine which was much produced projections much quicker than human draftsmen.
Image ID: cgs01173, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection Category: Coast and Geodetic Survey/Instruments/Projection Ruling Machine/ • High Resolution Photo Available
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