Digital Library Search
Description
Duplex bar No. 15 on its trestles.Figure No. 5, Appendix No. 11.Part II, Report of the Superintendent ... 1897, p. 483. (Image credit: NOAA Central Library)
Credit
NOAA Central Library
Display Date
1897
Collection
Historic Coast & Geodetic Survey
Keywords
Geodesy
Base Line
Instruments