Minox BN 7x50 C Mode D'emploi page 26

In the illustration (Fig. 3) the arrow in the middle
indicates the boat's direction of travel, in this case
roughly due south. When you look through your
binoculars the compass shows the observed buoy at
190°. The difference between South (180°) and the
observed buoy (190°) is 190° - 180° = 10°. This is
your first reference value for position determination.
To complete the determination of your exact position
you need a second reference value. In the following
illustration (Fig. 4) the indicated and observed light-
house is at 120° (300° - 120°) from the boat. You can
now determine your boat's exact position on the map
by superimposing the two course lines. Your boat's
position is exactly where the two lines cross.
26
Note: Do not cover the light opening for the com-
pass (5) with your fingers, as you with otherwise
not be able to read the bearings.
Compass illuminator switch
The compass of your MINOX BN 7x50 C has an illumi-
nator switch so that you can also read the compass
in the dark. When you press the switch the compass
display has a backlight in red. There is no illumination
when the switch is not pressed.
Fig. 3 Fig. 4