This item is a 2 in 1 design height and depth gauge with a digital display screen. You can use it to determine degree of wear of depth or height. It is made of material for long-term use. Easy to between two measuring units and read the numbers with the screen display. There is no doubt that it's an excellent measure tool. Features -Color: Black Red. -Material: Plastic. -Size: About 15.00X9.80X1.80cm/5.89X3.85X0.71in. - Featuring a measuring rule, this digital height gauge provides measurements in mm/inch with read-out accuracy. - A strong magnet at the bottom absorbs the workpiece for easy measurement. - The digital height gauge is suitable for measuring holes, grooves, manual router table . - Large digital display for quick reading, easily change mm/inch, which is convenient to use. - Made of tough plastic, durable for woodworking, construction, home decoration, table , etc. - Large scale digital display screen, the reading is clearer, and the work efficiency is faster. Package list: 1 x height gauge 1 x depth measuring rod 1 x battery