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![Electro-chain measurements at Sawmill Bay theb1686.jpg Electro-chain measurements at Sawmill Bay](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1686.jpg?itok=Re9nq_zd)
Description
Electro-chain measurements at Sawmill Bay. (Image credit: C&GS; Season's Report 1966-74)
Credit
C&GS; Season's Report 1966-74
Display Date
1966
Location
Valdez area, Alaska
Collection
Historic Coast & Geodetic Survey
Geodesy
Triangulation
Baseline & Treverse Measurements
Keywords
Geodesy
Triangulation
Baseline
Electronic