坐标测量机 (CMM) > Measure Steps > Measure from Scan > About Measure from Scan
  
About Measure from Scan
While defining measure points for measuring a surface or surfaces, you can create scan segments on the surface or surfaces by using the Scan option for defining the points. You can later use these segments as the basis for measuring the surface or surfaces.
 
* The entire segment or segments should lie within the boundaries of the surface or surfaces to be measured.