This code dimensions a wall in a plan.
It works with internal and external, it works with pointy walls, it works with families and intersecting walls.
(upload://g2GPICFWu7YpijDhaPhpN1YGaCq.dyn) (16.9 KB)
Hope that’s useful,
Edit: I’d made it to create individual dims, but it’s very easy to make it output a single dim, so i’ve added that option
1 Click Dimension Wall.dyn (18.5 KB)