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![Twelve inch repeating circle (bottom) and heliotrope (top) theb1151.jpg Twelve inch repeating circle (bottom) and heliotrope (top)](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1151.jpg?itok=_t1BZoa9)
Description
Twelve inch repeating circle (bottom) and heliotrope (top).Fig. No. 27, Report of Superintendent ... 1866 (Image credit: NOAA Central Library)
Credit
NOAA Central Library
Display Date
1866
Collection
Historic Coast & Geodetic Survey
Keywords
Geodesy
Instruments