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![Leveling upper mark with accuracy only to cms theb1840.jpg Leveling upper mark with accuracy only to cms](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1840.jpg?itok=XcRRIufT)
Description
Leveling upper mark with accuracy only to cms.Special training mission of Joseph Lushene (Image credit: C&GS; Special Report Lushene 1946)
Credit
C&GS; Special Report Lushene 1946
Display Date
1946
Location
Brazil
Collection
Historic Coast & Geodetic Survey
Geodesy
Determining the Elevations - Leveling a Continent
Keywords
Geodesy
Leveling