Low precision as you may know its a topo training, so they still
want you to search for the checkpoint even you know you are in the
correct MSG.
Ya, the first digit is maybe like what i mentioned earlier...
the "serial number" of the grid 100km square.
I used to have a website explaining how MGS is tabulated, and what
mils (or milli-radians) are actually obtained.
And the interesting fact that SAF's 6400 mils is one of the 3
standards internationally..
If i am not wrong, NATO is 6400 mils, Russia is 6000 mils, and
Scandivanian is 6200 mils. for a complete 360 bearing.
