pl23_cgs02483.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23cgs02483jpgDescription
Tidal bench mark leveling operations. Lieutenant Ray Jackson runninglevel, Tom Orlowski the rodman on left.
Credit
Collection of NOAA Center for Operational Oceanographic Products and Services
Collection
Historic Coast & Geodetic Survey
Keywords
Coast and Geodetic Survey