The tool offset sensor allows you to automatically enter the value of the tool length offset which is fixed in the CNC tool cone holder or directly in the spindle chuck. The machine automatically measures the tool length, then corrects the Z-axis coordinate so that the tooltip is at the correct compensation height. On machines equipped with automatic tool change, the measurement can be performed once or before each use. It is also possible to measure the tool after machining to check its parameters and to see if it is damaged or still in the proper working condition.