【ON-SWITCH OPERATION】Simple on switch operation turns 3 laser lines on and off and projects 2 horizontal lines and 1 vertical line onto the surface; PREXISO allows homeowners to hang pictures, mount frames and perform home renovations easily. Angle scale and LED light: The angle scale serves as an angle reference that allows you to easily adjust the desired angle in the range of 15°-75°; angle scale and level are equipped with LED light to make reading in dark work areas easier. Precise laser lines and levels: Prexiso laser spirit level projects horizontal and vertical lines on any surface up to 9 m, 2 laser lines are at an exact 90° angle. The built-in levels provide more accurate leveling. Class II laser product, maximum laser power < 1mW. Wall mounting base: the wall mounting base makes your hands free for marking. With 3 mounting options: 1) with 2 pins for rough surfaces; 2) with 10 self-adhesive strips for smooth surfaces; 3) with hanging hole on the top for each surface. Compact design: Prexiso line laser has a compact design that can create 2 lines on the floor, wall or other surface at a 90 degree angle to help you align the angle at a 90 degree angle for surface design. Perfect for woodworking, shelving, molding, tiles or other jobs that require accurate alignment., Weight: 0.79375 pounds, Manufacturer: Hangzhou Great Star Industrial Co.,LTD