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Proton Magnetometer


A magnetometer works on the same principle as a metal detector; however, it covers a larger area very quickly.  Like a metal detector, a magnetometer picks up the interruption in the earth's magnetic field created by metal objects.  As the magnetometer is being towed from a boat, it picks up these differences and signals the operator, usually by a beeping signal, when they are over a metal object.  The tenders then mark the location with surface buoys and either divers search that location or some type of video is sent down.  A magnetometer works well for finding iron and nickel objects.  It can cost $3,000 to $20,000. 


The Fishers Proton 4 Magnetometer is illustrated in these pictures. For more information, you can contact JW Fisher at:

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