TEST PIECE AND METHOD FOR CALIBRATING A COORDINATE MEASURING MACHINE

摘要

A test piece for calibrating a coordinate measuring machine has at least one reference measurement object (28a-28e) having a spherical surface region. The spherical surface region is a partial region of a complete spherical surface which ends in an arcuate edge (32). The partial region is arranged in such a manner that the shape of the edge (32) can be faithfully seen in a plan view (Fig. 2).