To hold the magnification constant when changing the distance between the source and sensor, the rotary axis must be shifted accordingly in the direction of the sensor. The increased cone angle can cause measurement errors in the lower and upper areas of the work piece. This can be prevented with special tomography techniques, such as spiral tomography. Figure shows an alternative machine design that can be used to implement the described functions. Additional sensors can be integrated on the linear axis of the X-ray sensor in order to use multisensor technology.  It is, however, advantageous for the user if the additional sensors of a multisensor machine are mounted on independent axes. This allows them to be positioned outside of the working area when tomography is being performed, and their operation is made significantly easier.  It makes sense to equip the multisensor axis with a tilting or rotating/tilting joint with a sensor change-out interface.