Turning angle detector

Rotation angle detecting device for detecting the rotational angle between by means of a bearing pin (10; 22) pivotably interconnected articulated arms (2, 4). It is with an articulated arm (2, 4) rotatably a rotary encoder (8; 18; 30) and to the other articulated arm (2, 4) rotationally fixed an evaluation element (6; 20; 32). The rotation angle sensor (8; 18; 30) and the evaluation element (6; 20; 32) are in the journal (10; 22) adjacent to the area facing surfaces of the articulated arms (2, 4).