You know what it’s like to zoom in and use X-ray and orbit and hide components, etc etc, in order to lock in to the exact first registration point with the line tool or tape measure. And then you’ll zoom and use X-ray, etc, etc, to find the second point, only to discover that you missed it or registered it to the wrong thing. At that point, one has to start again. Is there any way, that if a person is absolutely certain of the first registration point, to lock the pencil or tape measure on to it, so that different end points can be tested for alignment without having to go back and lock in the first point every time??
On a slightly related matter… I have recently set up a keyboard shortcut, ‘SHIFT X’, to hide or unhide everything in the model that is not being edited. I grabbed that little trick from a YouTube video. I think it was a What a fantastic short-cut this has turned out to be. It has made my modelling so much easier. Never again will I find myself zoomed or orbited on the wrong side of a wall and have to hit ‘SHIFT Z’ to go to zoom extents to get re-oriented.