How to determine the azimuth?
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Azimuth is an indicator used in geography, geodesy, cartography and other sciences. It indicates the angle at a certain point in the terrain between the direction of the north and any object (or object on the map). More information about this indicator can be found in our article - What is the azimuth.
How to determine the azimuth: ways
You can determine the azimuth of a compass (if there is no map of the area), and using a conventional protractor (if the angle is measured for the object on the map). The azimuth angle can be from 0 to 360 degrees. The counting is performed in the direction of the clockwise direction, and the most northern point on the map (terrain) is considered as a reference point (0 °).
It is easiest to determine the azimuth of both northern, and southern, eastern and western objects: it is always 0 °, 180 °, 90 ° and 270 °, respectively. It should be noted that the azimuth of 360 ° does not exist, since its value coincides with the azimuth of 0 °, therefore it is considered to be the north direction angle with a value of 0 °. More information about the definition of the cardinal points can be found in our article - How to determine the cardinal directions
Determination of azimuth using a protractor
In addition to the protractor itself, a ruler, a pencil, and a map will also be useful for this. To measure the angle you need to put a ruler so that the point (object, object), the azimuth of which is determined, intersects with the nearest meridian. You can draw a light line with a pencil. The angle measured between this line and the meridian (north direction) will be the azimuth sought.
Determine the azimuth using a compass
How to determine the azimuth of a compass, if the map is not at hand or there is no protractor, which is applied graduated scale, indicating degrees? In this way, the true azimuth is usually measured, which may differ from the magnetic one. For example, if the azimuth of an object is 40 degrees, then taking into account this change may not be worth it.
Here the map is useful: on it you need to find the magnetic correction closest to the desired object. It can be of different values (for example, "+2" or "-3"). When determining the azimuth of 40 degrees, the magnetic correction must be taken into account and move already in the direction with the given value of this correction.