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pl23_theb2483.jpg

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https://www.noaa.gov/media/digital-library-photo/pl23theb2483jpg

Description

Station Pen in Washington.Triangulation party of O. B. French - occupied by J. S. Hill.Instrument was mounted on tree trunk.Instrument remained steady in azimuth but unsteady in level

Credit

NOAA, John Hayford Album

Display Date

1905

Location

Washington

Collection

Historic Coast & Geodetic Survey

Geodesy

Triangulation

Wooden Towers & Signal Poles

Keywords

Geodesy

Triangulation

Towers

Wooden