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pl23_cgs02199.jpg

Horizontal intensity variometers on left

Image

Download ( 1.61 MB )

Permalink

https://www.noaa.gov/media/digital-library-photo/pl23cgs02199jpg

Description

Horizontal intensity variometers on left

Collection

Historic Coast & Geodetic Survey

Keywords

Coast and Geodetic Survey

Geophysics Geomagnetism