Ok, now were getting fancy, the Hang It Perfect can also help with flatscreen mounts. If you need to mount to multiple studs, nothing will help more since you can space the arms 16'' apart,* find one stud, and violá, you can mark the second stud location without even looking for it! Keep in mind, you should follow your mounts directions when selecting the proper mounting procedure, and let the Hang It Perfect do the rest!

*assuming your studs are standard 16'' on center