Spectra Precision GL722 Dual Grade Laser. GL722 Dual Grade Laser for long range, high accuracy elevation control; Automatic self-leveling, advanced radio remote, grade matching, Planelok, and automatic axis alignment allow quick and accurate set-ups for any fine grading or major construction project. Operating diameter of 3000 ft (900 m), with X axis grade range of -10% to +10% and Y axis grade range of -0.5% to +25%. Ideal to use for general construction, site preparation, and road construction. Offers automatic temperature compensation for the industry's best accuracy regardless of temperature changes.
Powerful, long range remote control takes one person to set up and operate; Even grade reverse is done in an instant and you can automatically control all transmitter functions, even while sitting in the cab of your machine. WHAT YOU SEE IN PICTURES IS WHAT YOU GET. SE HABLA ESPAÑOL THANKS FOR LOOKING.