Topcon RL-H5A Self Leveling Horizontal Rotary Laser with Bonus EDEN Field Book, IP66 Rating Drop, Dust, Water Resistant, 800m Construction Laser, Includes LS-80L Receiver, Detector Holder, Soft Case - Amazon.com
Topcon RL-HV2S Self-Leveling Dual Grade Laser DB Kit with LS-80X Receiver and Alkaline Batteries- 1051612-01 - Contractors-Tools.com