Bosch’s GMS120 is more than just a stud finder (though it located the centers of those we tested it on within an eighth of an inch). It also detects live AC wiring, metal objects, plastic pipes ...

that all stud finders locate, some also differentiate between other hidden objects, like metal pipes and live wiring. These multifunctional devices, such as our top overall pick, the Bosch GMS120 ...