| 摘要 |
PCT No. PCT/GB95/00343 Sec. 371 Date Oct. 17, 1995 Sec. 102(e) Date Oct. 17, 1995 PCT Filed Feb. 17, 1995 PCT Pub. No. WO95/22739 PCT Pub. Date Aug. 24, 1995A measuring probe has a stylus carrier supported on a fixed member in a rest position when no force acts on the stylus, the stylus carrier being deflected from its rest position to produce a signal when an external force is applied to the stylus. The support for the stylus carrier comprises two concentric rings of ball bearings of different pitch circle diameters and arranged that each ball on one of the members contacts two adjacent balls on the other member. An additional annular surface is provided on one of the members and is contacted by each of the balls on the other member. The arrangement provides that the force required to deflect the stylus is substantially equal in all directions of the force, and that the movable member is properly guided during its deflection to the point where a signal is produced.
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