Magnetic Stud Finder Accuracy +/- 0.5 in Overall Height 2 1/2 in Batteries Required Batteries Not Required Overall Width 1 5/16 in Overall Depth 13/16 in Materials Detected Ferrous Metal Wood Battery Type Not Applicable Scan Depth for Ferrous Metal - Maximum 1 in Scan Depth for Wood - Maximum 1 in Scan Depth for Live Wire - Maximum Not Applicable Features Bubble Level Scan Depth for Non-Ferrous Metal - Maximum Not Applicable Functions Center-Finding Multifunction Professional