Rotary and / or Kippwinkelerfassungseinrichtung for a ball joint

Rotating and / or rotatable Kippwinkelerfassungseinrichtung for a ball joint with a in a ball shell (3) and pivotably mounted, and a joint ball (1a) and a pin (1b) having ball pin (1), wherein at least one magnet (2), in particular a permanent magnet is disposed in the joint ball (1a), characterized by a rating based on the magnetooptical effect display device (4) for displaying the magnetic field of the at least one magnet (2), an image capture device (10) for detecting the by the display device (4) displayed information and a data processing unit for calculating the position of the ball pin (1) for the ball socket (3) based on the detected information.