| CPC B25J 9/1692 (2013.01) [G05B 19/402 (2013.01); G05B 2219/39015 (2013.01); G05B 2219/39026 (2013.01)] | 22 Claims |

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1. An adaptor which is adapted to fit onto and/or around an element on or for a coordinate positioning machine, the element having a point of interest, and the adaptor comprising
an at least part-spherical bearing surface having a centre point which, when fitted onto and/or around the element, substantially coincides with the point of interest.
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