INTERSECTION

The most reliable method of fixing the position of a distant object or feature is by intersection. The method depends on observing the distant object or feature from at least two positions, and plotting the bearings to the object or feature on the map.

Where the two bearings cross each other on the map,this is the location of the object or feature.

Remember

When taking the bearings from two different positions they must be at least 150 metres apart. And remember to convert the magnetic bearing to a grid bearing.

PINPOINTING YOUR LOCATION

There are several ways to help pinpoint your location on a map, knowing these methods are useful,enabling you to make sure you are moving in the right direction, or can help if you are lost to relocate.

These techniques can be used very effectively once you have learned to interpret the features on the map. Some methods will rely on your eyesight while others use your compass.

How do we do it

Say we are on a path, we know which path it is but we are not sure of the exact position. Looking at the map and the surrounding area you have identfied a small wood.

Take a magnetic bearing to the wood.

Subtract the GMA.

Then without moving the setting of the compass place it on the map. Then by moving the whole compass until the North indicator is pointing to the top of the map making sure that the orienteering lines are parallel with the vertical grid lines. Slide the compass over the map until the direction of travel arrow is pointing at the wood. Where the compass crosses the path this is your location.