When current flows through a Hall element, it supplies a voltage perpendicular to the current flow if a magnetic field acts vertically on both. . As this voltage runs proportionally to the magnetic field strength, it is extremely simple to conduct a non-contacting and absolute angular and displacement measurement by attaching a position magnet at the movable machine part. Complex systems can be installed in extremely small spaces by combining several sensor elements and integrating the entire signal processing in a few components. The systems work largely insensitive to ageing and independently of field strength fluctuations of the transducer magnets. Both contactless, i.e. guided, and non-contacting, i.e. 2-part, systems make it possible to measure angles of up to a full 360° and even over several revolutions or displacements of up to 50 mm. High resolutions with excellent dynamics, high mechanical tolerances and fast feasibility of customized special solutions are additional convincing features of this technology.