This is a kind of fine quality level instrument, 4D 16 line for finer positioning, with self-leveling system, flexibility and stability. With vertical and horizontal laser lines, convenience to use. It is perfect for a variety of uses including flooring, tile layout, wall paneling, wallpaper, stencil, wall paneling, finish carpentry, wall stud layout, and wall stud installation. partitions. You can try. Features: 4D 16 lines for finer positioning, with self-leveling system, flexibility and stability. Self-leveling function can conquer a small sturdy place such as 3 , on 3 the laser light will keep flashing to remind you to put it on a flat place. Alarm function beyond the safety range. Magnetically damped compensation system guarantees fast leveling time. The 360 rotating base, and equipped with the fine adjustment mechanism, can make the machine quickly find the target. 1/4 "screw size for easy connection, it can be used with a tripod to adjust the working height of the machine. A 360 horizontal line can be drawn on the wall. Two vertical lines can be drawn on the wall. leaning function, it can be applied in a slanted position as the building at the stage. with fixed distance to 7mm wall, generally for indoor and outdoor use. Three tactile buttons, one outside / open button, one V button and one H button, the slashline, horizontal line and vertical line with a clear division. (OUT = slashline) Comes with remote control, A = vertical line, B = horizontal line. The button is wear-resistant, with high sensitivity to change line mode quickly and comfortable hand feeling. Easy to carry with the case, providing quick and convenient mobility and storage. Note: Please do not let the laser line shoot directly at your eyes.