To move on a compass, it is necessary to determine an azimuth by the card. It is relevant for the air and sea vessels making long flights and swimmings. It is relevant also for pedestrian travelers in the conditions of poor visibility, at night, when there is no an opportunity to move on a reference point.
It is required to you
- - traveling card;
- - compass;
- - protractor;
- - ruler;
- - pencil.
Instruction
1. The azimuth is a corner between a meridian of location and the direction regarding. He says in degrees from 0 to 360 and is counted clockwise. To define an azimuth – the direction regarding – and, perhaps, the direction of your movement, it is necessary to know the location. Mark it on the map, being guided on the surrounding reference points designated on the card.
2. Find a reference point in the direction of which you have to move. The rectilinear movement on an azimuth is possible in airspace and in the high sea. On the land it is applicable in the open steppe or in the desert. The movement is the most often by land it is carried out on the broken line, considering natural obstacles. Therefore the azimuth in the course of the movement will be periodically have to adjusted by you.
3. It will be necessary for definition of an azimuth for you a protractor, it is desirable transparent, a ruler and a pencil. Put a ruler on the card so that the point of your location and a reference point appeared on a ruler, and draw a pencil the line before crossing it with the next meridian. Now apply to the line of a meridian a protractor it the basis. Bring central to risk to crossing with the nacherchenny line – the direction on a reference point. On a protractor arch, in the place of crossing with the same line take readings in degrees. It will also be an azimuth.
4. For the lack of a protractor it is possible to use a compass, using its graduated compass card.
5. But there is more to come. For example, your direction on a reference point (azimuth) made 30 degrees. It will be a true azimuth which, as a rule, differs from magnetic. Therefore, focusing your compass on 30 degrees and it will be wrong to move in this direction. Therefore find on the card the note, next to the region of your location, with value of magnetic inducement. It is expressed in degrees and can be both with the sign +, and with minus value. Enter the amendment, and safely move, being guided on a compass.