DIFF Subgroup
G01B 21/20 for measuring contours or curvatures, e.g. determining profile
Introduced: January 1980
Full Title
Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant > for measuring contours or curvatures, e.g. determining profile
No child classifications to compare. This is a leaf node in both IPC and CPC.