Measurement of permanent magnets with a new potential measuring coil

For the measurement of the magnetic field intensity Hmin the materials of permanent magnet systems, a new potential measuring coil (PMC) is proposed consisting of a nonmagnetic thin rod fitted with windings of constant winding density which is long enough to assume one end to be in a field free space when its other end is placed on points whose potentials are to be measured. A fluxmeter connected to the PMC and set to zero when the measuring end of the PMC is placed on a certain point of the magnet indicates the magnetic potential relative to this point when moved to other points of the magnet. The PMC can also be used for recording of equipotential lines of magnetic fields.