... BeamFeatures:*Auto-leveling on V/H directions with a plumb which forms up dot and down dot.*While the unit is rotating ... , spot rotation can be shifted freely to scanning, the speed of laser rotation can also be adjusted. *Manual/Auto can ... (240°)Leveling range ±4°Scanning angle 10°/30°/60°,180° Rotating speed 0,150,300,600rpm(Laser Source 635nm,class 2MWorking ...