Northwest Instrument NRL802 Two Beam General Purpose Laser with Slope Match Function • Horizontal & Vertical Leveling Laser • Laser Beam: Horizontal & Zenith • Wave Length: 635 nm • Leveling Accuracy: 1/16 in @ 100 ft horizontal 1/8 in @ 100 ft vertical • Operating Range: 2,000 ft with Detector • Self Leveling Range: +/- 5 • Self Leveling Method: Electronic Servo Motors • Bumper Sensor: On Board • Includes: Laser, Remote Control, Bracket, Grid Target, Glasses, Rechargeable Batteries & Charger, Carrying Case & Manual • Tripod Adapter: 5/8 x 11 Thread