The 1D excavator system uses three inclinometer sensors mounted on the boom, stick and bucket. The sensor on the stick also has a built-in laser receiver.
The system is reset by means of a laser plane or a physically defined reference height, e.g. a grade bar or curb stone height. The desired depth and slope are entered into the control box.
With this system, you only work with a one-direction slope. The arrows on the display will indicate whether you are too low, too high or “on-grade”. This information is also given by means of an audible signal, while the LED screen also displays the level in metric units or US feet.