METROLOGY APPARATUS

摘要

Position measurement apparatus, such as hexapod co-ordinate measuring machine, is described that comprises a thrust frame and a metrology frame. The thrust frame comprises a load carrying base (10) connected to a moveable platform (6) by a plurality of powered extendable legs (8). The metrology frame comprising a metrology base (14) attached to the load carrying base (10) by a base attachment mechanism such as kinematic mounts 16. The base attachment mechanism is arranged to prevent any distortions of the load carrying base (10) being transmitted to the metrology base (14).