I need to make a drawing of an O-Ring.
Very simple, It's just a Revolved Circle.

It won't let me dimension it in drawing though..
It says i need to create a split line...
Why in the world is that? Shouldn't i be able to just put a ?dimon the OD or ID of it?
(Without the Obvious Workarounds)
What's going on?SolidworksDrawings And Detailing