by distance:
— at round around glance and definition of height - 1% of the scale of the distance of indicator;
by "azimut":
— at round around glance 2 o (degrees);
by height:
— in regime of landing at plane's flight at constant height - 100 м;
— at defining the height - 300 м.
It doesn't look particularly good:
In 20km scale the distance precision is just 200m.
And the height precision 100-300m ???