Profile: Roper Laser deals with construction lasers, surveying instruments, and automatic machine control systems. The TP-L4B red beam pipe laser has features such as automatic line centering & grade zeroing, and RC-200 radio remote for complete control of all metal, waterproof housing. The RL-H3C rotating laser has features such as fully automatic self-leveling, height of instrument alert (HI alert), long 500 ft. operating radius, 15 arc second accuracy, and 650 nm visible red beam.