Bilby 116-foot portable steel tower used in triangulation. These towers are
built by 5 men in approximately 6 hours. Preparations are being made for
dismantling this tower in this image.
Image ID: cgs00547, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Photo Date: 1933 ca.
Credit: NOAA Central Library Historical Imagery
• High Resolution Photo Available
of the U.S. Department of Commerce, National Oceanic & Atmospheric
NOAA Central Library
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June 10, 2016