Coordinate positioning machine

Abstract

A method is disclosed of calibrating or otherwise characterising a coordinate positioning machine having a first member that is moveable relative to a second member. One or more length-measuring devices is/are coupled in a plurality of different configurations between at least one support mounted on the first member and a plurality of supports mounted on the second member via a base plate 22. For each of the plurality of different configurations, the machine is controlled to move the first member relative to the second member to collect calibration data. The geometry of the machine is characterised by a set of model parameters, and the calibration data are used to determine a better estimate for at least one of the model parameters.

Dependencies are inferred from the claim text.