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![Cut-off, i theb1136.jpg Cut-off, i](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1136.jpg?itok=wpdsghE0)
Description
Cut-off, i.e. flashlight, in use at night on comparator.Night-time operations in comparing lengths of steel tapes.Fig. No. 13, Appendix No. 3, Report of Superintendent ... 1901, p. 258
Display Date
1901
Collection
Historic Coast & Geodetic Survey
Keywords
Geodesy
Base Line