Topcon′s NEW RL-H5A auto-leveling laser combines precision, versatility and value in one job site tough package. Its super-fast self-leveling motors are accurate to +/-10 arch seconds meaning whether you′re checking grade or setting batter boards you′re going to be accurate the first time. Its high-power 2.4mW diode means you have a 2,600ft. (800m) diameter working radius making it a great reference for machine mounted receivers. All of these features plus optional dry, rechargeable battery operation makes the RL-H5A more than twice the laser offered by anyone else.