The Hilti PRI 36 Rotating Laser has a green laser for maximum visibility and a finer, more accurate line over typical working distances. It also features auto alignment which allows the tool to align the beam at the touch of a button. In the PRI 36 Rotating Laser, the laser receiver and remote control unit are combined in one device. This laser also features digital measurement, state of the art indication, and the ability to charge while running. The PRI 36 Rotating Laser is recommended for use in leveling, aligning, and squaring.