Dimensions lets you create a length dimension
annotation.
When the dimension supports are related to a parameter (sketch constraints,
knowledge, etc) for which tolerances are still defined, they are set to the
dimension tolerances.
Minimal distance can be created between canonical surfaces (revolution or planar
surfaces) or the projected edge, in the current annotation plane, of a non-canonical
surface.
Before you begin: Open an existing 3D shape and activate the required
view.
Select the element for which the dimension needs to be created.