: Open the rear compartment and connect a fresh 9-volt alkaline battery .
Standard construction framing dictates that studs are spaced either 16 inches or 24 inches apart on center. If your stud finder indicates a stud every few inches, you are likely looking at plumbing pipes, conduit, or fire blocking rather than a structural stud. Always double-check your measurements with a tape measure. stanley fatmax stud finder 400 manual