The simplest type consists of a short, bar magnet with a nonmagnetic pointer attached to its center so that it is at right-angles to the axis of the magnet. The magnet is pivoted, like a compass needle, at its center and the pointer travels over a calibrated scale.
Sensitive magnetometers used in space research include the proton precession magnetometer and the helium magnetometer.
Related categories• ELECTRICITY AND MAGNETISM
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