Pulsed magnetic treatment requires measurements on magnetic fields of 30-5000 A/m directly under industrial conditions; one needs a medium-accuracy magnetometer having a simple design and reliable in use but stable in the presence of interference, large temperature fluctuations, mechanical loads, etc. These requirements are met by a magnetometer based on a two-element ferroprobe employing unipolar pulsed excitation. To ensure that there is good noise immunity in conjunction with high sensitivity and high pulse power, square unipolar pulses are used with standardized lengths. One then obtains a linear conversion function above 20 A/m.