PeoplesElbow
Well-Known Member
You were easily able to do it because you knew the size of what you was looking at also.If you do it long enough, it gets really easy to determine altitudes and sizes of air vehicles....in the old days when we actually had to stand outside and fly them RC style, I could tell you within 100' or so how high something was.....haven't had to do that for quite some time but can still get pretty close.