1With alarm function, suitable for leveling. The measured degrees range from 0 to 1, and the sound ranges from 89 to 90. When the battery power is low, the alarm will continue to sound and the product cannot work normally. Please replace the battery in time. 2The magnetic design of the V-shaped groove can be adsorbed on the surface of uneven objects. There are also marking grooves on both sides of the shell. 3With LED display, the brightness is higher and clearer. Accurate numbers are provided, so you can make precise cuts safely. 4The angle gauge has many functions, such as automatic reading, data hold, calibration, low power display, etc. 5The multifunctional angle gauge is made of ABS, which is durable and can be used as a bevel gauge and digital woodworking level.