a device for the automatic rotational orientation of a tube head relative to a preferably stationary tube body , wherein the device has a sensor for sensing a current rotated position of the tube head or tube body having a position indicator , the device further includes a positioning device which interacts with the sensor and is designed to effect a rotary movement of the tube head or of the tube body in reaction to a control signal from a control unit . the sensor is designed to generate a sensing signal corresponding to a rotary moment of the tube head or tube body and the control unit correlates the sensing signal with a reference signal and for generating a control signal from a characteristic value corresponding to a degree of correlation , in particular a maximum correlation or minimum correlation , for the positioning device .