Relief model - a thin gauge aluminum sheet - is formed on the Braund Reliefograph. The "altimeter is seen on the left. In: Wilson, Don C. 1949. "Production of Plastic Relief Maps" in Surveying and Mapping, Vol. IX, no. 3, pp. 183-186.
Image ID: cgs00119, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection Photo Date: 1945 Ca. • High Resolution Photo Available
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