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NOAA Photo Library Image - theb4160

Leveling operations. Umbrella used to shade instrument from sun which causes derangement from level of the instrument.

Image ID: theb4160, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Photo Date: 1940 circa
Credit: Collection of Captain Marvin Paulson, U.S. Coast and Geodetic Survey (ret.)

• High Resolution Photo Available




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Last Updated: April 30, 2013