Find the distance between two points on the model.
        
        - 
                In the main window toolbar, click the 
                    (Measurements) icon.
             
- 
                In the dialog, click the Distance tab.
            
 
- 
                In the modeling window, pick two points on the model
                    surface.
                
The dialog will display the distance between the two points.
Note: The
                        points do not have to lie on the same face; the distance is measured
                        directly through 3D space, not along the model surface.
 
             
- 
                Click Close.