Bruno Struck,
With respect to your posting, please consider our CMM Calibration Comparison Cube. This system allows users to track CMM performance with respect to its original calibration. The "CMM CCC" does not require NIST certification and evaluates the CMM according to B89 standards.
You can review this system at our web site (http://www.h2inc.com) under products or e-mail me for more information.
Greg A. Hansen
President - HSquared, Inc.