Compass (Cmp) - MINOX BN 7x50 DCM Manual De Instrucciones

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 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 Fig. 5
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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
Please note: When looking through your MINOX
BN 7x50 DCM, you will see a horizontal graticule
consisting of pixel dots. One pixel equals one mil.
The distance from one vertical line to the next is ap-
proximately ten mil. The azimuth is the sum of all pixel
dots along the graticule depicting the length of the
object being viewed (fig. 6)
Determining length
The distance to an object must first be known:
Distance to object (m) x HA
1.000
= length of object (m)
In this example, the known distance is 1.100 meters.
The horizontal angle is 40 mil (each pixel is equivalent
to approximately 1 mil). 1.100 x 40 divided by 1.000
results in an object length of 44 meters.
Determining distance
The length of the object must first be known:
Length of object (m) x 1.000
= distance to object (m)
HA
In this example, the known length of the object is 44
meters and the horizontal angle is 40; 44 times 1.000
divided by 40 results in a distance of approx 1.100
meters to the object.
Horizontal angle (HA) = total sum of pixels
along the length of the measured object
A reading can also be taken in the horizontal graticule
compass mode (fig. 5) to make approximate object
height calculations. The vertical line in the middle can
be used to determine the approximate height of an
object. Each pixel is equivalent to approximately 1 mil.
If necessary, the binoculars can be turned vertically to
allow for more scope of measurement.
distance (m) x VA
= height (m)
1.000
Vertical angle (VA) = total sum of pixels
along the height of the measured object
Important note: the readings made with the hori-
zontal graticule are meant only to be approximate.
Various factors must be taken into consideration like
atmospheric moisture (resulting in objects appearing
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