Zircon Metal Detector

MetalliScanner m40 quickly and easily detects metal in wood, drywall, paneling, tile, stucco, plaster, concrete, and other non-metallic surfaces. It locates ferrous (magnetic) metal up to 4 inches (102 mm) deep and non-ferrous (non-magnetic) metal up to 2 inches (51 mm) deep. Great for checking lumber for nails.