Two useful tools in one
I strongly recommend this Auto Leveling Laser w/ Stud Finder. It will pinpoint the edges of the stud to better give you the location of the center. In addition, it will also identify electrical wiring to help prevent shock. The laser has worked beyond my expectations for the business as well as home use. I highly recommend this product. I would like to have seen nice carrying case for the product.
I have dealt with MCM Electronics a number of times and have been more than satisfied.