Eccentric Tomography (a) now makes it possible to place the work piece arbitrarily on the rotary table.  This eliminates the laborious and time consuming alignment of the work piece, making measurements more convenient and efficient.  The measuring software automatically calculates a virtual axis of rotation at the center point defined by the operator within the measuring volume.  During the measurement, rotation around the virtual axis of rotation is ensured by moving the precise machine axes.  ROI CT (region of interest) is used to measure partial regions of the object at a higher resolution.  This can be done by first capturing the entire object at a lower magnification and therefore a lower resolution (b).  The region of interest is then tomographically scanned at a higher magnification and resolution (c).  When the higher resolution area is reconstructed, the missing voxel information is calculated from the images captured at the lower resolution and included in the back projection calculation.  Also zones within the volume of the object can be measured at higher resolution with- out having to capture the entire object with time and memory intensive Raster Tomography.  The Multi-ROI CT (d) combines the advantages of Eccentric and ROI Tomography.   Several high-resolution regions of the work piece can be located at any arbitrary position within the measured object. The overall volume and the ROI volumes share a single coordinate system. This means that an overall point cloud for the work piece can be computed automatically with different structural resolutions.  During analysis, features from  the  overview  volume  and  the  various ROI measurements can be linked to each other.