A GAUGE ARTEFACT AND METHOD FOR CHECKING A COORDINATE POSITIONING MACHINE

摘要

This invention concerns a gauge artefact (100) comprising a base (102) for mounting on a table of a coordinate positioning machine and a platform (108) comprising at least two portions having a nominally identical geometric property. The platform (108) is locatable relative to the base (102) in at least two positions such that each of the at least two portions having the nominally identical geometric property can be presented at a common location relative to the base (102). The platform (108) may be arranged such that the positions of the portions having a nominally identical geometric property can be interchanged by movement of the platform (108) between at least two distinct positions. The positions may be interchanged through rotation of the platform (108). The invention also concerns a method of checking a coordinate measuring machine.