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![Early use of proton precession marine magnetometer theb1328.jpg Early use of proton precession marine magnetometer](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1328.jpg?itok=U5lnj8Sh)
Description
Early use of proton precession marine magnetometer.Deployment of towed magnetometer on C&GS; Ship PIONEER
Collection
Historic Coast & Geodetic Survey
Keywords
Geophysics
Geomagnetism
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