Patent ID: 7885777
Filing Date: 2011-02-08
Classification: G01B

Abstract:
1. A method of calibrating a scanning or analogue probe said probe being mounted on a machine including a controller, the scanning or analogue probe being relatively re-orientatable between a plurality of orientations with respect to the machine, the probe including a deflectable stylus with a workpiece measuring tip and having an output which measures an amount of deflection of the stylus with respect to the probe, the method comprising: calculating a probe calibration matrix which calibrates the output of the probe for a first orientation of the probe; and rotating said probe calibration matrix by an angle to obtain a further probe calibration matrix which calibrates the output of the probe at a second orientation of the probe where the probe is oriented by that angle with respect to the first orientation, the controller or the machine controlling the rotation of the probe calibration matrix.