The Bosch GLL 150 ECK 360 Degree Line Laser is the right choice for tool for users who need a 360 degree, one-person leveling solution right out of the box. With one-button operation that delivers a 530' diameter range, the operator can level dirt on a new site or maintaining level during a fresh pour of a concrete form. The Bosch Smart Pendulum Leveling System automatically levels the laser and indicates out-of-level. It includes the LR 3 laser detector.