pl23_cgs02142.jpg
![Geogmagnetic observatories that have facilities for semi-automatic scaling ofmagnetogram records as of 1969 cgs02142.jpg Geogmagnetic observatories that have facilities for semi-automatic scaling ofmagnetogram records as of 1969](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_cgs02142.jpg)
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https://www.noaa.gov/media/digital-library-photo/pl23cgs02142jpgDescription
Geogmagnetic observatories that have facilities for semi-automatic scaling ofmagnetogram records as of 1969.
Display Date
1969
Collection
Historic Coast & Geodetic Survey
Keywords
Coast and Geodetic Survey
Geophysics Geomagnetism