Northwest Instrument NEXPK800X Grade Laser Pkg. • Exterior Grade Laser Pkg. • Laser Beam: Horizontal & Zenith • Wave Length: 635 nm • Leveling Accuracy: 1/16 in @ 100 ft horizontal 1/8 in @ 100 ft vertical • Grade Setting Method: Dial-in Automatic Programmable Grade Settings: +/- 8 • Power: Rechargeable Batteries • Tripod Adaptor: 5 / 8 x 11 thread • e Control, Rechargeable Batteries and Charger ,Detector with Clamp, Grid Target & Glasses, NAT83 Contractors Tripod, NAR09E 9 Aluminum Rod Carrying Case & Manual