The Bosch GPL100-50G features a five-point, self-leveling laser with ±1/8 In. accuracy at 30 Ft. for up/down plumb, align and level applications (the bottom point’s accuracy is ±1/4 In. at 30 Ft.). 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.