| Map Reading |
| Finding your position General - If you don't know your position, the first essential step is to orient the map by one of the methods describe before. Finding position from distance detail (Resection) If there is no local detail, and if the contours are not sufficiently close or shaped to give you a reliable indication of position, your position can only be determined from distant objects such as hill tops, corners of woods, or other natural features. Select three points around you so that your position is within the triangle by the points. If you have a means if marking the line of sight from each point accurately on your map, while keeping it correctly oriented, mark these lines on the map. If your map is correctly set, these lines will meet at a pint which is your position, or least they will make a small triangle within which your position falls. Check form a fourth pint if available. Finding the position of a distant object It is necessary to locate the position of a distant object: a) To locate the position on the map of an object visible on the ground. b) To find on the ground an object whose position is known on the map. To solve the first problem, used a compass. If the object is visible but its map position is unknown, take up a position, which you can identify on the map, and take the field bearing of the object. Convert this into the map bearing by placing it on the map. Your object will then lie on this line. - Orient your map and study it along the lone, comparing it with the features on the ground: determine the approximate distance at which your object lies in relation to those features. Assuming your object is marked on the map, identify objects close to it, which are marked, and determined its position by reference to these objects. - To solve the second problem, draw on the map the lone of bearing from your position to the object. Measure the map bearing and convert it to field bearing. With your compass, look along this bearing and identify the point on the ground. |
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| Fig 6.1 Resection |
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