Durable ProtractorThis digital protractor is made of carbon fiber and ABS, which is wear-resistant, anti-deformation and will not scratch your hands. It is lightweight, durable and easy to carry.Large LCD DisplayThis angle measuring tool is equipped with a larger LCD screen, providing clearer and faster readings. The precise laser engraved scale remains visible over time without blurring.High PrecisionThis angle measuring tool has 0.1 degree accuracy and 0.05 resolution, with a measuring range of 0-999.9. The folded length is 7.9 inches/200 mm and the total length is 15.7 inches/400 mm. Note: Before measuring the angle, make sure to place the ruler horizontally and reset the value to zero to ensure accurate measurement.Hold/Rev and ZERO FunctionShort press the Hold/Rev button, you can hold and retain the data. Long press the Hold/Rev button to invert the display, which is convenient for measuring large angles and making reverse measurements. Short press the zero button to reset the value to zero at any angle, ensuring greater accuracy. The device will automatically shut down after 6 minutes of inactivity.Widely UsedThis digital protractor is versatile and can measure lengths and angles (metric and imperial). It is widely used in woodworking, furniture, building materials, decoration, schools, home DIY, machining and drawing. This angle gauge is ideal for angle cutting, measuring, trimming, wall angle measurement, etc. in applications such as cornices, skirtings, niches and floors.