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![Showing how line of sight clears recorder with inclined tripod theb1762.jpg Showing how line of sight clears recorder with inclined tripod](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1762.jpg?itok=-OHgHp3H)
Description
Showing how line of sight clears recorder with inclined tripod.Mechanized leveling with velocipede.Party of J. D. Crichton (Image credit: C&GS; Season's Report Crichton 1920)
Credit
C&GS; Season's Report Crichton 1920
Display Date
1920
Collection
Historic Coast & Geodetic Survey
Geodesy
Determining the Elevations - Leveling a Continent