I see your replies. Sure I see the info on the bottom.
Needed? Maybe not. Handy? I think so. Just a suggestion
Creating reference lines and snipping them later is kind of clunky.
Alibre Atom has a measurement tool that I use often.
Doing the guitar tuner tutorial I wanted to loft the flat gear at an angle to match the worm gear face. To find the angle I drew 2 lines and then erase them. A measurement tool with dashed lines that do not affect the the extrusion would be very handy I think. 