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![Using Eimbeck duplex base-line measurement apparatus theb1147.jpg Using Eimbeck duplex base-line measurement apparatus](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1147.jpg?itok=FMxgYpVD)
Description
Using Eimbeck duplex base-line measurement apparatus.Aligning duplex bar horizontally and vertically.Fig. No. 6, Appendix No. 3, Report of Superintendent ... 1901, p. 244.
Display Date
1901
Collection
Historic Coast & Geodetic Survey
Keywords
Geodesy
Base Line