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pl23_theb2461.jpg

Signal pole with flag and tin cone for reflecting sunlight

Image

Download ( 757 KB )

Permalink

https://www.noaa.gov/media/digital-library-photo/pl23theb2461jpg-0

Description

Signal pole with flag and tin cone for reflecting sunlight.Epping Plains area of Maine

Credit

NOAA Central Library

Display Date

1857

Collection

Historic Coast & Geodetic Survey

Geodesy

Triangulation

Wooden Towers & Signal Poles

Keywords

Geodesy

Triangulation

Towers

Wooden