Throw away the straight edge and string! L80 Laser Pulley Alignment Tool provides a precision line laser and (3) machined targets. Operation is simple: mount the aluminum laser source, with it's intergated magnets to the movable pulley/sheave. Mount the adjustable magnetic Targets to the stationary pulley/sheave. The visual laser becomes your line and when all three targets agree, the system is properly aligned. The L80 Laser is fast, safe and simple to operate. No Training, no computers, no programming is required. Reduce your belt alignment time drastically, it becomes a one technician job! Correct offset, twist and pigeon-toe of belts. Achieve proper service life of belts and bearings. L80 is also a Laser Level.