Digital Display Depth Gauge Two-in-one dual height depth gauge 0-80mm large digital display screen, clear data and fast reading. The magnetic measurement surface has a powerful magnet with a diameter of 10mm at the bottom, which can be attached to an iron object for measurement. With delete function, data can be saved. Two measurement values: Large LCD display screen is convenient for reading. The tread depth gauge supports the unit mm/inch. Relative measurement and absolute measurement can be performed, and the operation is very simple. Wide range of applications: This self-supporting measuring tool belongs to every milling cutter and is suitable for routers and milling tables. It includes a depth gauge with locking screw, which can accurately adjust the height of the knife and saw blade.