Guys from the blog ITS Tactical If you’re on the field, it’s possible to use “in the field”. It is convenient to use a bulky topographic map.
Below is a brief record.
Tactical map – how to fold, and other “chips”
So, the topographic map is the sixteen cells. Let’s designate them in Latin letters like a strange order. We get four “cells” – A-B-C-D, D-E-G-H, J-K-L-M, N-O-P-Q, dividing the map into four equal areas.