With green line laser measurement, the 360 degree horizontal and vertical laser lines can be switched individually so you can choose what you want to process with vertical, horizontal or all laser lines at the same time. also with 16 green horizontal and vertical lines, 4 x 360 lines without dead angle. With our intelligent pendulum system, this laser levels itself and indicates an uneven condition while the pendulum is unlocked. once the pendulum is locked it switches to manual mode to lock the lines for use at any angle. With self-leveling function, leveling time, typical: Ём3 s, otherwise a beep sounds. Can be hung on the wall, from the traditional floor to the coat rack, the scope of application is wider. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store