|
map1 
|
In this example we imagine that we are stood at the pumping station(bottom
right circle) and want to go to the stream junction(top left).
1st Lay the base plate of the compass between
the two points with the direction of travel arrow pointing where you want
to go i.e. to the stream junction (See map2).
note: Using the inner orienting lines of the base plate is more
accurate than using the plastic edge of the base plate |
map2 
|
2nd Swivel the compass housing until North(red
N) points to the top of the map, use the parallel orienting lines on the
compass and the blue grid lines on the map to help you.(map3)
note: you can find the top of the map (grid north) by looking
at the writing, most of it runs from west to east with north being at the
top. |
map3 
|
| 3rd Read off the bearing, in this instance 312
degree's |
4th Add 4 degree's to adjust for the difference
between grid north (which the map points to), and magnetic north (which
the compass needle point's to).
note: this difference varies over time and also with country
, this informaation is usually specified on the map. |
| 5th Follow the bearing- Swivel the whole compass
until the red end of the needle line's up with the North(red N) on the
compass housing. Then follow the direction of travel arrow. |