| 摘要 |
PCT No. PCT/GB95/02450 Sec. 371 Date Jun. 13, 1997 Sec. 102(e) Date Jun. 13, 1997 PCT Filed Oct. 17, 1995 PCT Pub. No. WO96/12929 PCT Pub. Date May 2, 1996An arrangement for mounting a stylus on a stylus support for a metrological instrument includes a camming pin on a mounting disc of the stylus support, which passes through a mounting hole in a mounting disc of the stylus. A spring applies a sideways force to a sloping cam surface of the camming pin, which is converted into a force pulling the camming pin through the mounting hole and thus holding the mounting discs together. An operator can deform the spring so that it releases the camming pin, allowing the stylus to be mounted or dismounted without applying significant force to the pivot bearing of the stylus support. If excessive radial force is applied to the stylus arm, the spring will ride up the cam surface allowing the stylus to be released from the stylus support, thereby avoiding applying extreme forces to the pivot bearing.
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