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 Lasers & More | Ontario Agra
Topcon RL-SV1S Self-Leveling Single Grade Laser DB Kit with LS-80L Receiver - 313990759 (uses Alkaline Batteries) - Contractors-Tools.com