All systems go! Taking three point sextant fix while on-line.
Recorder by clock. Fathometer operator in bottom left out of picture.
Officer in charge plotting fixes with three-arm protractor on table forward.
Image ID: theb4325, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: Washington, Grand Coulee Dam, Columbia River
Photo Date: 1948
Credit: Family of Captain David M. Whipp, C&GS
• High Resolution Photo Available