The straightness application is measured in two axis. The laser beam is used as the reference. Deviation, in distance, between the laser beam and the measurement object is measured in two or more positions with the use of a receiver. The program allows for up to 99 points to be measured. Typical straightness applications are measurements of machine guides, machine beds, machine ways and guide rails.
Straightness with the Arc Angle method is used to determine the centre position of full or half bores, with a horizontal centre line. The laser beam is set roughly to the center line and each bore centre is measured by rotating the receiver from three up to nine positions in each bore. Typical applications are straightness measurements in bearing journals, for example, compressors, turbines or machinery with split casings.