Patent ID: 9518811
Filing Date: 2016-12-13
CPC Classification: G01B

Claim Text:
1. A form measuring machine, comprising: a stem having a probe configured to make contact with a workpiece; a arm having one end portion joined to an end portion of the stem; a rotation fulcrum which acts as a fulcrum for a rotating motion of the stem and the arm; a detector configured to detect a displacement amount of the rotating motion of the arm; a biaser configured to impart on the stem and the arm a torque around an axis of the rotating motion in accordance with the displacement amount of the rotating motion; and a measuring force adjuster configured to impart on the stem and the arm a torque, in a reverse direction of the torque generated by the biaser, by an attraction force generated by a magnetic force between at least two magnets mutually arranged at opposite ends of the measuring force adjuster.