pl23_theb1138.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23theb1138jpgDescription
Making contact at rear end of tape.Man standing is maintaining pre-set constant tension on line.Man kneeling is reading tape.Fig. No. 11, Appendix No. 3, Report of Superintendent ... 1901, p. 258
Display Date
1901
Collection
Historic Coast & Geodetic Survey
Keywords
Geodesy
Base Line