The Bosch GPL100-30G features a three-point, self-leveling laser with +/-1/8 in accuracy at 30 ft for up or down plumb, align and level applications. This unit features green beam technology, which is up to 4X brighter than standard red beams. It also has the Bosch exclusive VisiMax™ technology, which delivers maximum beam brightness in most jobsite conditions. The unit includes point projection to the front, so it can be used in a variety of positions for flexibility on the job. It is faster than a standard manual plumb bob. The unit includes several durability features, such as the smart pendulum system to lock the laser when switched off, 360 deg rotation, a hard carrying case and full rubber overmold housing. The integrated multi-purpose laser mount features strong magnets and allows the user to mount the laser virtually anywhere.