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![Level rod holding on pin driven in ballast to the point where it wassecure and not moving cgs02452.jpg Level rod holding on pin driven in ballast to the point where it wassecure and not moving](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_cgs02452.jpg?itok=m73ycnOw)
Description
Level rod holding on pin driven in ballast to the point where it wassecure and not moving. (Image credit: Collection of NOAA/NOS/National Geodetic Survey William H. Burger Album)
Credit
Collection of NOAA/NOS/National Geodetic Survey William H. Burger Album
Collection
Historic Coast & Geodetic Survey
Keywords
Coast and Geodetic Survey