Abstract: The equipment of polar coordinates to measure automatically magnetic field ispresented in the paper. The equipment is compatible with long coil for integratingmeasurement, small coil or Hall unit for point measurement. The absolute precisionis smaller than 3×10~(-4) when the Hall unit is used, in the case of relativemeasurement with long coil, the precision si smaller than 1×10~(-4) can be obtained.The equipment was developed especially for the quality control of magnetproduction process.