The #OpenSCAD GUI just got some basic measurement tools for distances and angles.
For now, this needs the Manifold geometry engine enabled (see Preference -> Features) and a full mesh render (F6).
Have a look at the youtube video which gives a quick introduction.
@OpenSCAD I'm curious: Is there a plan to make Manifold on by default in the next stable release? I keep posting in various places how to enable the Manifold kernel.
@OpenSCAD which version introduces the new measurement feature?