Warranty Card - SVBONY SV27 Manual Del Usuario

3. Measuring the Vertical View Angle
Vertical View Angle measurement is similar to measuring the Horizontal View
Angle. When the Vertical View Angle measurement is small, aim the
intersecting point of the vertical and horizontal lines of the Reticle at the lower
part of the object and read the scale value at the top of the object. The angle
included between the upper and lower parts of the target (lighthouse) is 6
decade mils (60 mils).
When the Vertical View Angle is larger than the vertical scale range (60 mils),
it can be measured in steps, and the angle can be obtained by summing up
the value of each step.
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4. Using the Reticle to Measure Distance
The distance measurement of a target can be calculated by using mil Reticle.
The formula of distance measurement: L (km) = H (m)/ω
L- The distance between the observer and the object (km)
H - The height of the object (m)
ω - the View Angle of the object measured with the Reticle of the binocular
(mil).
When measuring the distance, estimate the width or height of the object and
next measure the View Angle of the object. Accordingly, you can calculate the
distance between the observer and the object using the formula.
For example:
There is an adult whose height is 1.70 m. (H = 1.70 m)
The Vertical View Angle of the adult is 4 decade mils (40 mils)
L = H/ω=1.7/40 = 0.0425 km = 42.5 m
Therefore: the distance between the observer and the adult is 42.5 m. (for
feet conversion, multiply 42.5 by 3.28).
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