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![Rodman holding rod vertical during observations theb1755.jpg Rodman holding rod vertical during observations](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1755.jpg?itok=eqtYpo_b)
Description
Rodman holding rod vertical during observations. (Image credit: NOAA, John Hayford Album)
Credit
NOAA, John Hayford Album
Display Date
1900?
Collection
Historic Coast & Geodetic Survey
Geodesy
Determining the Elevations - Leveling a Continent
Keywords
Geodesy
Leveling