How to produce a diametric dimension ?

andre_gareau

I'm New to Onshape and trying to work my way through the Tutorials which aare fairly simple.
However, there are some actions which are depicted that I cannot for the sake of me, replicate !
I have gone through the 4 Forum suggestions and tried everyone of them, but to No avail.
I'm about ready to declare this a "Bug", except that in  my 30+ years in the business, I know better.
Was the implementation of the Ddiametric Dimension command changed in one of your recent updates ?
If not, then I have to state, that I find the explanations of the codmmands very poor indeed, since I have spent over an hour trying to get "Diametric Dimensioning" to work.
Also, is there somewhere that I can find a "Glossary" of the terms used by you in Onshape ?
Thank you.
Andre

NeilCooke

Described here in the help under “Centerline dimensions” https://cad.onshape.com/help/Content/sketch-tools-dimension.htm?Highlight=Diametric

NeilCooke

Diametric dimensions are really only for revolved profiles. Create a dimension between the centreline (must be construction geometry) and the entity then move the cursor to the other side of the centreline. 

NeilCooke

Described here in the help under “Centerline dimensions” https://cad.onshape.com/help/Content/sketch-tools-dimension.htm?Highlight=Diametric

andre_gareau

Thank you