These indicate the maximum values found at the edge pair.
- Absolute curvature deviation = (1/Radius1)-(1/Radius2)
- Relative curvature deviation = (Radius1-Radius2)/(Radius1+Radius2)
If you run the tool on the attached sample (made by @fares.boulamaali) it might make more sense. The examples on the right show how equal radii can still mean a curvature discontinuity when the direction of the radii don’t match.
surface analysis.3dm (78.4 KB)