Enhanced ruler
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
We should add an enhanced ruler to ParaView. This would be a ruler that had the tick marks and markings of the cube axis, but would allow a user to place the end points on a 3d object. This "ruler" should then float over the 3d object, always displaying the ruler, ticks and markings - even if the ruler is imbedded in the 3d object.