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Observing tower built of native timber in the Philippine Islands

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.

Credit

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

Location

Philippine Islands

Collection

Historic Coast & Geodetic Survey

Keywords

Coast and Geodetic Survey