Features: Quickly detect the center position of the wooden stem. Digital LCD display, easy to read. The center of the wooden stem can be detected, and the wall thickness is 1/2 inch (13 mm). Detectable wood stem center with a wall thickness of 1 inch (25 mm). Detectable wood stem center with wall thickness of 1 1/2 inches (38 mm). Detects iron, lead, aluminum and other metals with a wall thickness of 2.36 inches (60 mm). Detectable live wires in the wall, the wall thickness is within 2 inches (51 mm). All detection functions have automatic correction function, for maximum reliability to the user. All detection functions have AC alert function. Measure the edge of the wooden stem file. With low voltage display. Wood stem center detector with probe metal and voltage function. Locate metal studs, pipes, steel bars, walls, joists behind floors and ceilings, and the edges and center of live wires quickly.