Usage; Determining A Location - Suunto KB Serie Guia Del Usuario

USAGE

Keep both eyes open and aim with the compass so that the sighting line meets the
target when viewing through the lens. In R-models the main scale indicates the
reading to the target you are aiming at and the reversed scale indicates the reading
from your target to the aimed location. This feature is of great help, especially at sea,
when determining exact locations. Use your left or right eye for reading the compass
depending on your personal preferences. When both eyes are open, an optical
illusion makes the sighting line extend above the body of the compass over the target.
This increases reading accuracy and speed.
Heterophoria (an eye disorder some persons suffer from) may deteriorate the reading
accuracy at times. This can be controlled in the following fashion: Keep both eyes
open and take a reading. Then close one of your eyes. If there is no significant
change in the reading, there is no directional discrepancy in the vision axes of your
eyes and both eyes may be kept open during orienteering. If a charge is noted, keep
only one eye open and aim half way over the compass body. The sighting line now
rises above the instrument body and is visible against the target.

DETERMINING A LOCATION

You can determine your own location on the map in case there are two targets in
sight, which have known locations. For instance, look at the enclosed map. The
bearings 325° and 345° to the land marks have been determined using the main
scale. By drawing directional lines on the map, you will be able to see your own
location where the two lines intersect (A). When determining an exact location, the
bearings need to be corrected according to the local declination (variation).
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