Figure 43 illustrates the principle of the described correction method. The geometric artifact arises because, when rotating the rectangular measured object, shorter radiographic lengths occur at the corners than in the middle. This leads to an apparent spherical shape during measurement. Using, for example, tactile measurement of calibration points, these deviations are captured precisely. Building on these reference points, the tomographic point cloud is corrected geometrically as an entire entity. Due to the constant nature of the error curve, relatively few calibration points are sufficient. In Figure 36 (see p. 56), these process steps are represented. Using the “autocorrection” feature, traceable measurement results with specified measurement uncertainties are obtainable when using computer tomography.

Independent of the tomography process, it is possible to use these devices to measure important dimensions directly by using optical or tactile sensors.  This can also be used for measurement of very small features with tight tolerances.