The Iterative alignment command allows the use of several point-reducible features to best-fit them to their corresponding nominal values.
One difference of the Iterative versus CAD=PART is that the Iterative alignment does not require a constructed coordinate system. CAM2 Measure will use the coordinate system defined in the CAD Model.
See the attached document for pictures and details as well as tips.
Click here to download: Iterative Alignment
Keywords: best fit, alignment, iterative