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NOAA Photo Library Image - cgs00466

All the field data are sent to the Washington Office where the triangulation, magnetic, and tidal work is examined by mathematicians who make the necessary adjustments to connect it with work already done. Cartographers complete the plotting, inking and verification of the hydrographic and topographic sheets.

Image ID: cgs00466, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection


High Resolution Photo Available





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Last Updated:
April 30, 2013