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In operation maps, there can also be scales of 1:10,000 and 1:500. Tactical military scales are usually 1:50,000 and 1:1000,0000. Military Protractor Accurate 6' RA MILS Map Reading Nato Approved Orienteering. For example, 1/50,000 or “2cm equals 1 km” respectively. Note: Modern maps may display the scale as a fraction or a statement on the top of the map. RM2A82TKM Drawing instruments including John Fareys elliptograph for drawing ellipses and Sir Howard Douglas reflecting protractor in the form of a sextant. It is shown as both a ratio and a scale bar at the bottom of the map, typically. RF2BH4HMP Stock Vector Icon Pack of 4 Line Signs and Symbols for angle, military, protractor, house, target Editable Vector Design Elements. Scale is the ratio between the distance on the map and the same distance on the ground. These three parts together, give us the full grid reference. This reading represents your grid azimuth from point A to B in degrees. Step 4: Read the degree value at the intersection of your extended line with the protractor’s degree scale. Step 3: Align the protractor’s baseline with the north-south grid line. In this example, the identification is NS.įor the grid zone designator, make the prefix when reporting outside the grid zone designator. Step 2: Place the protractor’s index mark where your line crosses a north-south grid line. Read the large numbers on the horizontal grid line below the point and estimate tenths from the grid line to the point.įor example, this sample 1,000 km grid square would be 047 162.įor the 1000,000 km square identification, make the prefix where the point lies.The number of the vertical grid line on the left (west) side of the grid square is the first and second digits of the coordinates.
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Read the large numbers on the vertical grid line from the left of the point and estimate tenths from the grid line to the point. First, locate the grid square in which the point (for example, Point A, Figure 5-21, page 5-24) is located (the point should already be plotted on the map).