The commutator measuring program permits the measurement of different parameters at commutators (runners) of electric motors. It is possible to evaluate the values for the bar-to-bar difference (lamella difference, segment difference), the form deviation of individual segments, the runout and the roundness of the commutator. When using additional probes you can determine the shaft runout, roundness and the shaft diameter. A new option is the measurement of the angle difference between commutator and packet.