Hilti. For transferring height, setting slope, or leveling in indoor or outdoor situations, the PRE 3 Rotating Laser offers single-button operation and integrated Pulse Power technology for precise measuring and leveling. The laser has an operating range of up to 1,300 feet in diameter and features a large laser receiving window with digital measurement that localizes the laser beam and provides reliable readings. The durable design includes automatic shutdown in the case of excessive vibration. The lithium-ion battery offers up to 40 hours of continuous running time and can be charged while the PRE 3 is in use. 800.879.8000. www.us.hilti.com.