3 in 1 Angle Finder- Coobeast digital angle finder ruler has the function of measuring inside and outside angles and length. Moreover, the combination of millimeter and inch scale rulers and protractors make measurement easier. Pefect for construction, woodworking, drafting and decoration etc. And digital angle ruler comes with a storage bag, easy to carry!! ACCURATE MEASUREMENT- Angle finder is design with a large LCD display, which is easy to read. Measuring length range: 200mm/7inch. Anlge range: 0~360; Accuracy 0.3; Resolution 0.1. And angles are displayed in and " or degrees to 2 d.p. Provide you an accurate measurement. LOCK, ZERO HOLD- By rotating the locking button, the angle measuring tool can be locked at any angle, and pressing the hold button will maintain the reading. The zero button can reset the angle measurement tool at any time. All this designs make your measurements easier and more convenient anytime, anywhere. The perfect gift for woodworkers, architects, DIY enthusiasts etc. LONG-LASTING BATTERY INCLUDED- Digital display angle ruler comes with one CR2032 button battery inside, which can work for more than 2000 hours. In additation, Rulers are designed automatically shutdown after 3 minutes of inactivity. It makes working hours long-lasting. DURABLE AND PRACTICAL- Durable Stainless steel digital angle ruler ensures years of use. Simultaneously using laser engraving, the scale is clear and not easily worn. The edge of the ruler has been polished multiple times, making it smooth and not harmful to the hands. Suitable for both indoor and outdoor use! Also suited for checking / setting accurate angles on table saws or miter saws, measure angles for trim, walls, corners, base boards.