Device for determination of positions and faults in guidance

It is a device for determining position and determination of leadership errors specified. This includes a scale with a arranged in the position measuring direction position measuring graduation and on both sides adjacent to the position measuring graduation arranged guide error measuring graduations, which are arranged perpendicular to the position measuring graduation. Furthermore, a position-determining scanning unit is provided, which is movable relative to the scale and scans the measuring graduation for generating position-measuring signals. Furthermore, the device according to the invention includes at least one guide error scanning unit, which is movable relative to the scale together with the position-determining scanning unit and scans the guide error measuring graduations in order to generate guide error measuring signals.