This site contains affiliate links for which we may be compensated.
Stanley Stud Sensor$14.99
Locates the edges of studs or joists through drywall and other common wall materials at a maximum depth of 3/4". Electronic audio and visual signals are emitted once the edge of the stud is detected. Automatic shut-off for longer battery life.
Pencil notch for marking stud edges. Requires a 9V battery (not included).