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NOAA Photo Library Image - theb1736

Sextometer invented by Carl Aslakson. Known distance between sighting points. Sextant angle varies with distance

Image ID: theb1736, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: Philippines
Photo Date: 1930
Credit: C&GS Season's Report Aslakson 1930-143

Category: Topography/Plane Table/

High Resolution Photo Available





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Last Updated:
April 30, 2013