Use the Surface continuity tool to check the deviation and continuity along shared edges of surfaces.
Check the continuity between surfaces
 .
               The tool displays symbols along the shared edges representing the continuity and deviation at each sampling point.
 .
                  How do I read the symbolic display?
| Line style | Meaning | 
|---|---|
| Pale green, dotted. | Edge with no adjacent surface, or an adjacent surface
                        that is not selected.Hold     and click a surface to select
                        it.
                      | 
                  
| Bright green | Selected isoparametric curve with achieved continuity. | 
| Dark green | Isoparametric curve with achieved continuity. | 
| Yellow | Selected isoparametric curve with continuity break. | 
| Red | Isoparametric curve with continuity break. | 
| Symbol | Meaning | 
|---|---|
| Cross | Requested continuity achieved. | 
| T | Tangent/normal break. | 
| C | Curvature break. | 
| O | Gap in the common edge (think of the “O” as a hole). | 
| Blue symbol | Minimum measured deviation. (Not shown if minimum deviation is 0.) | 
| Red symbol | Maximum measured deviation. | 
These colors may be different if you have changed the interface color preferences.
  and click a surface to add
                     it or remove it.
                  
  on empty space to change
                     the scale of any active deviation comb plots.
                  
  on empty space to change
                     the sampling density.
                  
 -click an edge to switch
                     it between deviation comb and symbol display.
                  
  along an edge to show detailed
                     numeric information on the points under the mouse pointer.
                  
  ❒ 
                     Choose Preferences > Construction Options  
  and open the Tolerances and Continuity sections.
                  
Choose Evaluate > Continuity > Surface Continuity  
  ❒ and increase the Distance Between Checks setting
                     to make the tool calculate fewer sample points.