Spectra Precision GL622N Self Leveling Dual Slope Laser Level Trimble Topcon
Spectra Precision® Laser GL612 and GL622 Grade LasersEasy-To-Use, Full Featured Automatic Grade Lasers. The GL612 is a single grade laser and the GL622 is a dual grade laser. Both are rugged, automatic self-leveling lasers featuring grade capability of ± 25% and can be used in a wide variety of grading, excavating and alignment applications by