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pl23_theb1147.jpg

Using Eimbeck duplex base-line measurement apparatus

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Description

Using Eimbeck duplex base-line measurement apparatus.Aligning duplex bar horizontally and vertically.Fig. No. 6, Appendix No. 3, Report of Superintendent ... 1901, p. 244.

Display Date

1901

Collection

Historic Coast & Geodetic Survey

Keywords

Geodesy

Base Line