COMPATIBILITY - Fits for UTM, MGRS, USNG or other metric based coordinate systems. MAP SCALES - Used with the following map scales: 1:10,000 1:25,000 1:250,000 1:50,000 1:100,000. PROFESSIONAL - Marked with degrees and mils measurements around the circumference of the protractor. CONVENIENT - Added reverse azimuths make you quick reference. STANDARND ARMY PROTRACOR - Equivalent to the Graphic Training Aid 5-2-12 Coordinate Scale and Protractor. This tool is equivalent to the Graphic Training Aid 5-2-12 Coordinate Scale and Protractor.