CENTER STUD DETECTION: The stud finder detects center of stud for accurate results 3/4-inch RANGE: The stud finder wall scanner detects wood and metal studs up to 3/4-inch deep ACCURACY: The wood/metal stud finder has auto calibration for consistent readings SAFETY: Detects presence of live AC Thin profile for ergonomics and storage EASE OF USE: LED arrows and audible notifications of stud location, Weight: 0.29 pounds, Manufacturer: CRAFTSMAN