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NOAA Photo Library Image - theb1144

Duplex measures, carrying the rear bar ahead. After making contact, the rear bar was moved to the forward position. It was then realigned horizontally, vertically, and for azimuth on the base line . Fig. No. 9, Appendix No. 3, Report of Superintendent ... 1901, p. 244

Image ID: theb1144, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Photo Date: 1901

Category: Geodesy/Base Line/

High Resolution Photo Available

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Last Updated:
June 10, 2016