![]() Plotting a grid using the 1:50000 scale romer on the RA Protractor. ![]() Read of the inner scale and plot a bearing of 4500 mils back to the trig point.Ĭhoose two points on a map and practice this procedure. To plot a backbearing from the church, turn the protractor to the left with the centre point over the church. What is the Grid Bearing from the Trig Point to the Church? The outer scale is used when plotting bearings East and inner scale for bearings West. Where the line crosses the outer scale it indicates the Grid Bearing from your position (trig point) to your target (church with tower). Then draw a line or use a plumb line to draw a line from your location (trig point) to your target (church with tower). The LETHALIFE Tactical Square Protractor: DURABILITY - Stronger material and thicker then standard issue protractors. Military Style UTM/MGRS Coordinate Scale. Part Id: RoundGTAQuads, Made in United States, UPC: 824249150490. Large Print, Compass Rose in 90 Degree Quadrants. ![]() A line from 0 to 180 is called the base line of the protractor. The degree scale is graduated from 0 to 360 each tick mark on the degree scale represents one degree. This protractor represents the azimuth circle. Round Military Coordinate Scale and Protractor. The military protractor contains two scales one in degrees (inner scale) and one in mils (outer scale). All vertical and horizontal lines should be aligned with those on the map, overlay the centre point over your location on the map (trig point). Part Id: SuperGTA, Made in United States, UPC: 824249150063. This is the issued protractor, the metres scale romers are on the left side, these are the romers that you should use.Įnsure the map is on a flat surface, align the base line with the vertical lines on the map, the 0 should be in line with Grid North. Place the protractor over the map and align the northings and eastings with the zero lines and romer grids.Use a line of fine cord from the centre point when plotting bearings, a plumb line.Protractors without the conversion formula will provide. The RM Military Protractor is the only protractor with a printed formula and a diagram to align the map grid north to match the compass magnetic north. Tape up the yard scale romer to avoid mistakes. The only known BACK-UP of the GPS when it malfunctions is your ability to use a military protractor and military compass. The RM Military Protractor is the only protractor with a printed formula and a diagram to align map grid north to match the compass magnetic north.Army, Air Force (USAF), Navy (USN), Marine Corps (USMC Marines), Search & Rescue graphic. Always check the scale of the map and scale of the romer when plotting grids. Graphical Training Aid (GTA) Topographic Map Scale & Protractor.The protractor should always be used when plotting grids and bearings.The British Military only use mils in navigation.
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