Northwest Instrument NRL602 Three Beam Interior / Exterior Rotary Laser with Slope Match Function • Horizontal, Zenith & Plummet Leveling laser • Laser Beam: Horizontal, Zenith & Plummet • Wave Length: 635 nm • Leveling Accuracy: 1/16 in @ 100 ft horizontal, 1/8 in @ 100 ft vertical • Self Leveling Range: +/- 5 • Slope Function: Manual • Tripod Adaptor: 5 / 8 x 11 thread • Operating Range: 2,000 ft with Detector • Includes: Remote Control, Rechargeable Batteries & Charger, Bracket, Grid Target, Glasses,Carrying Case & Manual