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![Meridian and equal altitude instrument for astronomic observations theb1159.jpg Meridian and equal altitude instrument for astronomic observations](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1159.jpg?itok=23CbpDUi)
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https://www.noaa.gov/media/digital-library-photo/pl23theb1159jpgDescription
Meridian and equal altitude instrument for astronomic observations. Fig. No. 28, Report of Superintendent ... 1867 (Image credit: NOAA Central Library)
Credit
NOAA Central Library
Display Date
1867
Collection
Historic Coast & Geodetic Survey
Keywords
Geodesy
Astronomic
Instruments