A handle—also referred to as a ruler is displayed in the
3D for each command in the mechanism.
The ruler type is command–dependent. The ruler displayed is the nearest to the pointer that
can be used.
Consider the above example, the command is assigned to a
cylindrical joint; both angle and length DOFs can be
controlled. In this case, as you move the pointer, the length-ruler along with
the current command value appear (marked by the arrow). The angle value is also
displayed. If the angle-ruler appears instead, the length value is displayed.
For more information, see
About Engineering Connections.