The rigid probe changing magazine ZEISS Multi-Sensor-Rack (MSR) is available in different heights and widths for all sizes of ZEISS coordinate measuring machines. Probe systems are changed automatically by positioning the MSR within the measuring volume. The capacity on the machine is increased with additional planes. The MSR Duplex offers twice as many probe storage locations as the standard version. To do this, it is manually pushed out of the measuring range, rotated by 180 degrees and fixed in the measuring range with repeat accuracy.