There are two types of stud finders, magnetic and electronic. A magnetic stud finder, as the name suggests, employs a magnet to locate drywall screws or nails hidden behind the mud and paint. An electronic stud finder operates on batteries and detects the density in the wall.
You’ll find several styles and brands of stud finders on the market. Some can even detect plumbing and electrical wiring in your wall, like the Family Handyman Approved Zircon HD900.
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