TOPCON 1021200-73 - RL-H5B Self-Leveling Alkaline Batterie Laser w/ LS-80X ReceiverThe Topcon RL H5B auto leveling laser level combines precision, versatility and value in one job site tough package. Its super fast self leveling motors are accurate to + 20 arc seconds meaning whether you're checking grade or setting batter boards you are going to be accurate the first time. Its high power 2. 4mW diode means you have a 1,300 foot diameter working range (with detector use) making it a great reference for machine mounted receivers. The