Dewalt announces its first Stud Finders, offering automatic calibration for accurate stud detection in wood, metal and AC wiring. The 3/4 In. Stud Finder (DWO100) provides depth detection of up to 3/4 inches while the 1-1/2 In. Stud Finder (DWO150) provides depth detection of up to 1-1/2 inches. Key to