Johnson Level & Tool 40-6517 Self-Leveling Horizontal Rotary Laser Level Kit

Locking mechanism protects inner pendulum during transportation Self-leveling in the horizontal plane Manual-leveling in the vertical plane with 90-degree split beam with illuminated vertical vial Visual and audible alarms when beyond leveling range Laser rotates at 200, 400, 600 RPM Laser class IIIa, Power Output 5mWYou may also like JLX? 24" Heavy Duty Aluminum Box Level.