pl23_cgs00356.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23cgs00356jpgDescription
A wooden triangulation tower within a tower. Inner tower was to support theinstrument while the outer tower supported the observer.
Credit
Mr. Floyd Risvold, USC&GS;
Photographer
Mr. Oscar Risvold
Display Date
1923
Location
Alaska, Between Anchorage and Fairbanks
Category
Historic Coast & Geodetic Survey
Geodesy
Oscar and Floyd Risvold
NOAA Affiliation
USC&GS;