Measuring The Elevation Angle - Minox BN 7x50 C Mode D'emploi

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 direct-
ly 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 simp-
ly proceed in steps and add up the individual-
ly determined values.
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