This protractor is equivalent to the Graphic Training Aid 5-2-12 used by United States and NATO military forces around the world. Features two scales: one in degrees (inner scale) and one in mils (outer scale)  and three cut out windows with scales of 1:25,000, 1:50,000, 1:100,000 and 1:250,000. Heavy duty clear plastic

This protractor is equivalent to the Graphic Training Aid 5-2-12 used by United States and NATO military forces around the world. Features two scales: one in degrees (inner scale) and one in mils (outer scale) and three cut out windows with scales of 1:25,000, 1:50,000, 1:100,000 and 1:250,000. Heavy duty clear plastic