There are 400 grads in a circle (a 90-degree right angle equals 100 grads). The grad is a metric unit of measure found on some foreign maps. To convert degrees to mils, multiply degrees by 17.78.Ĭ. A circle equals 6400 mils divided by 360 degrees, or 17.78 mils per degree. A relationship can be established between degrees and mils. The mil expresses the size of an angle formed when a circle is divided into 6,400 angles, with the vertex of the angles at the center of the circle. Another unit of measure, the mil (abbreviated ), is used mainly in artillery, tank, and mortar gunnery. The most common unit of measure is the degree (°) with its subdivisions of minutes (‘) and seconds (“).ī. Directions are expressed as units of angular measure.Ī. Military personnel need a way of expressing direction that is accurate, is adaptable to any part of the world, and has a common unit of measure. It also includes some advanced aspects of map reading, such as intersection, resection, modified resection, and polar plots. It explains the use of some field-expedient methods to find directions, the declination diagram, and the conversion of azimuths from grid to magnetic and vice versa. It explains in detail how to determine the grid and the magnetic azimuths with the use of the protractor and the compass. It can be expressed as right, left, straight ahead, and so forth but then the question arises, “To the right of what?” This chapter defines the word azimuth and the three different norths. Direction plays an important role in a soldier’s everyday life. Finally, use the bottom edge of the protractor as a straight edge to draw a line between the two points.Being in the right place at the prescribed time is necessary to successfully accomplish military missions. Rotate the protractor and line the bottom edge up between the vertex and the small dot. Now, find the hash mark on the protractor that corresponds with the angle you want to draw, and draw a small dot outside of it. Then, line the bottom edge of the protractor up with the vertex and draw a straight line along it. Draw a small dot in the hole on the protractor to mark the vertex. To draw an angle with a protractor, first place the center point along the bottom edge of the protractor where you want the vertex of the angle to be. If the angle is facing left, use the top row of numbers. If the angle is facing to the right, use the bottom row of numbers on the protractor. Follow the other leg of the angle up to the protractor’s arc to see what number it intersects with and find the degree of the angle. Line up the bottom edge of the protractor with one leg of the angle. To measure angles with a protractor, first place the center point along the bottom edge of the protractor over the vertex of the angle you're measuring. You can use a protractor to measure and draw angles. The 2 measurement scales on the protractor makes this tool handy for measuring angles that open up from either direction.If your ray falls in between 2 whole numbers, like 50° and 60°, just count the lines to find your angle’s exact measurement.
![military flat compass and protractor military flat compass and protractor](https://3.bp.blogspot.com/-q9ANtL7cd18/UdoTlx4IQsI/AAAAAAAAAVA/PWnkarGENcA/s1600/Measuring+Compass+%2528c1950%2527s%2529.jpg)
Protractors typically label measurements in 10s, but between each number are little lines that represent 1°.Or, line the edge of a piece of paper along the line. If the line doesn’t extend past the protractor’s arc, lengthen it with a ruler.
![military flat compass and protractor military flat compass and protractor](http://img.michaels.com/L6/3/IOGLO/820169037/179050212/10315029.jpg)