[Digital Display Angle Gauge] Combine a ruler and a stainless steel protractor to measure angle and length. Allows for full 360° measurement inside and outside [Digital Depth Gauge] 3.14 inch / 80 mm digital height gauge, used for horizontal and vertical measurement. The electromagnetic stand can stand alone, which is very convenient. Easily change mm / inch [Data Hold Function] Without worrying about data deviation, press the hold button at any time to hold the measurement [Large LCD Display] Clear digital readings provide quick and easy measurement for your work [Widely Used] This tool is widely used in woodworking, construction, repair, machining, home decoration, etc.