English to Russian Tech/Engineering Surveying linguistics

The item Reliable sector is the reliable angle sector which is the sector between the nadir and the reliable angle. All beams inside this sector should be used to determine the average sway depth (ASD). In the example above with a reliable angle sector of 30° ASD is about 10.25m



Reliable area
All beams in this area are quite consistent and give a good result

Спасибо!