Current job is to renovate third floor of home. Since the final wall surface location in this sort of work is sometimes hard to predict, I used the new (to me, anyway) blue plastic electrical boxes that have an adjustment screw to bring them to final wall thickness after the drywall is hung. (BTW, I don’t think that I would use these again — too flimsy, and hard to get them set perpendicular to the studs.)
So I adjusted the boxes “back” so that they would clear the drywall as I hung it, marking the box locations on the face side of the drywall as I went. Or so I thought! I planned then to cut out the box openings, and adjust the boxes flush to the face of the drywall.
Except, of course, I forgot to mark one of the boxes, so I’m standing here with a line-voltage thermostat for the elctric heat, with no box to put it into.
I suppose others have been this clever in the past, so how does one find the box without ripping out a big section of drywall. I know where the box is, plus or minus 18″ in each direction, but prefer NOT to rip out and replace if there’s a smarter way.
Any suggestions, pls?