Patent ID: 8860954

Claim:
A measurement device comprising: a stator support arrangement; a carrier adapted to be supported, in use, on the end of a stator by the stator support arrangement which holds the carrier along a central longitudinal axis of the stator when the stator support arrangement is engaged with the stator; a laser metrology unit including a laser device, a minor or reflector, and mounting means for mounting said laser metrology unit on the carrier, said laser metrology unit transmitting a laser beam from the carrier towards an interior surface of the stator, the laser beam being reflected by the interior surface of the stator, and whereby said reflected laser beam is received by the laser metrology unit; the laser metrology unit being mounted so as to move in an axial direction relative to the carrier, the carrier being movable relative to the stator support arrangement and the stator when the stator support arrangement is engaged with the stator, and an arrangement whereby the position of the carrier is determined.