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Measuring the azimuth (horizontal angle)
The azimuth measures the horizontal angle and cor-
responds to the horizontal deviation from the north.
Using the MIL crosshairs you can read off the hori-
zontal scale value. In the illustration the azimuth of
the observed object at 6 MIL (4 MIL + 2 MIL) can be
simply determined using the horizontal scale value
(see measurement of elevation angle).
Determining the length of an observed
object when the distanceis known
On the basis of the measured elevation angle or azi-
muth angle the height or length of an observed object
can be determined using the following equation:
Example for calculating the object length
It is a preprequisite to know the distance. In our ex-
ample this is 1,100 meters. The scale value read off
the reticle plate is 6.0.
This is then calculated as follows:
1,100 meters x 6.0 divided by 100, resulting in an
object length of 66 meters.
Using the compass
Your MINOX BN 7x50 C II has an integrated analog
compass that shows the bearings in degrees. North
has an azimuth angle of 360°, east is 90°, south is
180° and west has an azimuth angle of 270°.
Determining your position with the compass
With the following example your can determine your
position using a map and your compass binoculars.
Azimuth angle = Horizontal angle
Length of observed object (m) =
Distance (m) x azimuth angle
100
Measuring the elevation angle
(vertical angle) with the vertical
scale reading on the MIL crosshairs
The elevation angle measures the angle between the
horizontal zero line, beginning at the starting point
of the observer and extending towards the observed
object, and the height of a defined point on the
observed object (in the illustration e.g. the base of the
lighthouse on the horizontal zero line and the top of
the lighthouse as defined point). If the elevation angle
is within the range of the vertical scale of 8 MIL, you
must first align the vertical scale in the crosshairs at
the foot of the lighthouse to “0”. The elevation angle
of the lighthouse in the illustrated example can now be
read off directly as 6.7 MIL, wherein 1 MIL corresponds
to 1/1000 inch. If the elevation angle of the observed
object lies outside of the vertical scale of 8 MIL, to
determine the elevation angle you must simply proceed
in steps and add up the individually determined values.
Example for calculating the height
of the object
It is a prerequisite to know the distance. This is 1,194
meters in our example. The scale value read from the
reticle plate is 6.7.
This is then calculated as follows:
1,194 meters x 6.7 divided by 100, resulting in an
object height of 80 meters.
Elevation angle = Vertical angle
Azimuth angle = Horizontal angle
Height of observed object (m) =
Distance (m) x elevation angle
100
Length of observed object (m) =
Distance (m) x azimuth angle
100
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