Curved rim groove geometry scanning apparatus for spectral frame, has measuring and positioning system including modifying unit that modifies inclination angle of main axis of finger with respect to reference axis to measure altitude

摘要

The apparatus has a measuring and positioning system for measuring and positioning a point along a cylindrical mark. The system has an altitude measuring and adjusting unit (22) provided with a rotational axle (X) that is fixed in altitude during functioning. The system has an inclination angle modifying unit that modifies an inclination angle of a main axis of a tracer finger (14) with respect to a reference axis (26) for measuring an altitude by pivoting an existing sensor (12) around the rotational axle.