The goniometer contains a subject table for mounting the controlled object, which is fixed to a rotating device to which an electric drive containing an electric motor is connected. The goniometer contains a small-sized sensing element based on nuclear magnetic resonance mounted on the rotating device, an angular position fixing device mounted so that its optical axis is perpendicular to the face of the controlled object. The outputs of the angular position fixation device and the sensing element are connected to a computing device containing a threshold device and a variable frequency generator.