English to Danish Tech/Engineering Agriculture testing of field crop sprayers

Context:
a) diagnostic equipment for checking the distribution of liquid in the following form:
- a manual or electronic "groove table" for checking the transverse spray solution in conformance with the technical requirements defined in ......

I think it may also be called a horizontal groove patternator or groove scanner (see link) but I cannot find any reference in Danish so far.

Basically I think it is a frame with a plate that is supposed to simulate the grooves in the field and which is used in the test center to evaluate the correct spayer liquid distribution. Any ideas?