Northwest Instrument NEXPK602 Three Beam Interior / Exterior Rotary Laser with Slope Match Function Pkg. • Exterior Horizontal, Zenith & Plummet Leveling Pkg. • 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: NRL602 Grade Laser, Bracket. Remote Control, Rechargeable Batteries and Charger ,Detector with Clamp, Grid Target & Glasses, NAT83 Contractors Tripod, NAR09E 9 Aluminum Rod Carrying Case & Manual