360 degree measure slope angles range, with no dead angle. 4 Strong built in magnets with strong adsorption releases your hands and records the readings easily. Comes with 3 separate vials for easy leveling: horizontal, vertical, and 45 degrees, and a large and clear LCD with backlight for easy reading. The digital inclinometer protractor comes with data hold function, the reading can be locked at any angle, and it is always displayed upright even the protractor is down. Place it on a reference surface zero to measure relative angle, with absolute angle measurement, you can test whether the working surface is on the level. The digital magnetic protractor will automatically turn off if there is no operation after about 3 minutes, very power-saving. Compact and lightweight, and there are 2 holes for convenient hanging and carrying. Widely used in many fields such as machinery manufacturing, construction, vehicle maintenance, physiotherapy equipment maintenance, wood processing, indoor and outdoor decoration, and etc. Specification: Size: 286x59x20mm/11.3x2.3x0.8inch Resolution: 0.05 Accuracy: 0.1 Range: 4 x 90 Power: 2 x AAA battery(not included) Model Number: HW-200 Features: LTD backlight auto-off Functions: Inverted display, Hold lock, Ruler Application Field: Machinery manufacturing, Construction, Communication installation, Home decoration and others. Package Includes: 1 x Level Inclinometer 1 x Instruction book Note: Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention. Wish you a pleasant shopping experience