Thread: Leica 2000b

I have a newish Leica 2000b rangefinder.
I have it set up so it tells me the equivalent horizontal range. When using it the other day I was getting the line of sight distance then the ehr distance and they were different but it was telling me that it was at 0 degrees so flat, so shouldn’t the two distances be the same or I’m I doing something wrong.
Any ideas