Sturdy & Durable Our digital angle measuring instrument is made of ABS, which is lightweight and easy to use, wear-resistant, scratch-resistant, and not easy to deform. The digital angle measuring ruler provides excellent durability and stability, and stands the test of time and repeated use. LCD Display: This anglemeter has a large, clear and intuitive LCD display, accurate and reliable, for effective and worry-free measurements. Clear laser etched graduations make it easy to read measurements, without blur, minimizing errors. Accurate Measuring Tool This angle measuring tool provides 0.5 accuracy, 0.05 resolution, 0-360 angle range, 21.8cm folded length and 40cm total length. (To ensure measurement accuracy, please place the ruler horizontally and reset it before each measurement.) Hold and ZERO functions: a short press of the Hold button keeps the measured angle at all times, eliminating any data drift. A short press of the Zero button allows the measurement to be reset at any angle, which is convenient for relative measurements. The device will turn off automatically after 6 minutes of inactivity. Multifunctional Measurement: This versatile digital protractor measures lengths and angles (both metric and imperial). It fits easily into a tool box or backpack for easy transport. It is ideal for measuring, cutting angles, measuring corners, trimming, laying cornices, skirting boards, etc. An indispensable tool for woodworking, furniture making, construction and DIY projects.