How Laser Machine Control and Laser Machine Indicate Systems Work
Lasers provide a perfectly straight line in space, with a beam of light. This is far superior to string lines with a level, leveling rods, or any other type of medium in the field because it is perfectly straight every time. Therefore it should be used as a replacement for many of these tools.
In a laser machine control system, the laser provides a reference plane of laser light over the jobsite. The machines are then dialed into this reference via arms mounted above the machine's cutting edge on grading equipment or on the dipper arm of excavation equipment. The receiver is initially set on-grade to a known desired elevation or benchmark. As the machine is moved and the blade or bucket is moved, the operator is given a visual indication of which direction to correct, or the machine automatically adjusts to grade hydraulically. The system not only makes an accurate grade the 1st time, it effectively doubles as a grade check system from the cab.
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