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Observing tower built of native timber in the Philippine Islands

Image

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Permalink

https://www.noaa.gov/media/digital-library-photo/pl23cgs02444jpg

Description

Observing tower built of native timber in the Philippine Islands. A treetrunk is used as the inner instrument supportin tower while the outer towerwill support the observer and recorder. (Image credit: Collection of NOAA/NOS/National Geodetic Survey William H. Burger Album)

Credit

Collection of NOAA/NOS/National Geodetic Survey William H. Burger Album

Location

Philippine Islands

Category

Historic Coast & Geodetic Survey

Keywords

Coast and Geodetic Survey