Dear Dan,
Please see bellow what I would need.
The first image is made in Archicad and you can see a dimension line that
follows the arch (also getting the length of the arch).
And in the second image there is an element that is not a half circle arch
and for that I cannot get the length or the radius from Layout, I have to
go to sketchup to get it, so this is why i think the dimension tool from
layout would need an improvement.
[image: Inline image 1]