an instrument to compare strengths of magnetic fields.
an instrument for measuring the intensity magnetic fields
a meter to compare strengths of magnetic fields
a sensor that reads these fields
A device used to measure magnetic fields.
An instrument used to measure the instantaneous value of magnetic induction, B.
An instrument that measures the instantaneous value of magnetic induction, B. Its principle of operation is usually based on one of the following: the Hall effect, nuclear magnetic resonance (NMR), or the rotating coil principle.