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-SV2S Self-Leveling Dual Grade Laser RB Kit with LS-100D Receiver and Rechargeable Batteries- 313990778 - Contractors-Tools.com