4. Recorded air pressure history
5. Altimeter (ALT)
6. Temperature (TEMP)
7. Recorded temperature history
8. Stopwatch (TIMER)
9. Time (WATCH)
Compass (CMP)
The digital compass displays the precise geographic
direction and bearings in which you are looking through
the binoculars. North is at 360°, East at 90°, South at
180° and West at 270°. The compass of your MINOX
BN 7x50 DC/DCM can alternatively display either the
center mark (fig. 4) or the horizontal graticule (fig. 5).
By pushing the navigation buttons (3), you can alternate
between the two display options. For example, in the
center mark mode, you can see the precise bearings in
which you are looking between 0° and 359° as well as
Fig. 4
42
Fig. 5
one of 8 geographic directions (cardinal points). Turning
the binoculars to the right and in succession, these are
North (N), North-East (NE), East (E), South-East (SE),
South (S), South-West (SW), West, North-West (NW).
Example: In fig. 1 you can see the compass reading
of South-East (SE) at precisely 84°. In fig. 5, your pre-
cise bearing is at 184° and with use of the horizontal
graticule, you can mathematically determine the range
to objects in the distance.
Using the horizontal graticule
The horizontal graticule as seen in figure 5, can be used
to determine the approximate length of an object or the
approximate distance to an object. Some factors must
be known to use the following calculations, which are
often indicated on navigational maps or can be deter-
mined using other devices or sources of information.
Fig. 6