pl23_theb1151.jpg
![Twelve inch repeating circle (bottom) and heliotrope (top) theb1151.jpg Twelve inch repeating circle (bottom) and heliotrope (top)](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1151.jpg)
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https://www.noaa.gov/media/digital-library-photo/pl23theb1151jpgDescription
Twelve inch repeating circle (bottom) and heliotrope (top).Fig. No. 27, Report of Superintendent ... 1866
Credit
NOAA Central Library
Display Date
1866
Collection
Historic Coast & Geodetic Survey
Keywords
Geodesy
Instruments