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![Level theb4158.jpg Level](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb4158.jpg?itok=eSkFLTdZ)
Description
Level (Image credit: Collection of Captain Marvin Paulson, U.S. Coast and Geodetic Survey (ret.))
Credit
Collection of Captain Marvin Paulson, U.S. Coast and Geodetic Survey (ret.)
Collection
Historic Coast & Geodetic Survey