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Duplex measures, ready to launch the rear bar Picture

Duplex measures, ready to launch the rear bar

Duplex measures, ready to launch the rear bar. 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. 8, Appendix No. 3, Report of Superintendent ... 1901, p. 244

Photo Category: Geodesy - Base Line
Photo Date: 1901

Author: NOAA

License: Public Domain Mark 1.0 (Public domain)
640 x 421 45.67 KB
1280 x 842 180.33 KB
1820 x 1196 425.32 KB
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Added On
18th October 2015
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