Item Type: Angle Ruler Material: ABS Power Supply: CR2032 (Not Included) Purpose: Angle Measurement Measuring Range: 0-360° Resolution: 0.05° Accuracy: ±0.2° Repeatability: 0.05° 1、Angle can Be Locked: 360 degree locking structure can be locked at any angle, humanized design and measurement are more versatile. 2、Portable: This angle neasuring tool is exquisite and compact, light weight, convenient to carry our for work and test. 3、Durable: Use high quality ABS materials to produce, durable for woodworking/carpenter/construction/DIY tools. 4、Digital Display: LED high definition LCD large numbers display, the measured data at a glance, easy to read. 5、Data Storage: Press the function key ruler to keep the data, press the button again, the ruler returns to the measurement mode.