Features： 1、[360 Degree Locking Structure] Angle ruler can be locked at any angle, humanized design and measurement are more versatile. 2、[4 In 1 Multifunctional Ruler] It can be used for level ruler, carpenter's angle finder, digital display angle ruler, universal level, all in one, convenient and trouble free. 3、[Easy To Read] The protractor is equipped with LED high definition liquid volume large digital display, and the measured data is clear at a glance. 4、[Durable And Sturdy] Made of high quality ABS material, not easy to damage, long service life, can be used for a long time. 5、[Lightweight And Portable] Small in size and light in weight, it is convenient to carry and measure and use, and it is very convenient. Specification： Item Type: Digital Angle Finder Material: ABS Power supply: CR2032 1x3V (not included) Purpose: Multi field multifunctional ruler Measuring Range: 0 Degree - 999.9 Degree Rotation Angle: 360 Degree Display: LED HD Working Temperature: 0℃ - +50℃ Working Humidity: ≤85%RH Working Current: ≤20 μA Accuracy: 0.5° 4 In 1 Function: Level, carpenter's angle finder, digital display angle, universal level Package List： 1 x Angle Finder(Battery Not Included) 1 x Manual