The new MT-SOFT (Machine Tool Inspection Software) allows users to now go beyond these limitations. For a highly skilled, specialized mechanic with extensive experience it was quite clear how and where he was supposed to measure a machine tool in order to take the necessary corrective action, mostly by mechanical adjustment and by scraping. The objects machined today are becoming more and more complex, and the quality requirements are increasing constantly. This situation has called for larger, more powerful and more complex machine tools with the respective requirements for higher accuracy. The geometry checking of a machine tool as a fundamental pre-condition for a high-quality production brings the test personnel and the classically used instrumentation to their limitation.