Ruler (Ruler)
This is a line source that can be used to measure distance between two points
The ruler can be used to interactively (using a 3D widget) or manually
(using the entries on the user interface) specify two points and then
determine the distance between the two points. To place points on the
surface of any dataset, one can use the 'p' key shortcut.
PropertyDescriptionDefault Value(s)Restrictions
Point1
(Point1)
This property controls the coordinates of the first endpoint of the line. -0.5 0 0  
Point2
(Point2)
This property controls the coordinates of the second endpoint of the line. 0.5 0 0