Levenhuk Wise PLUS 10x56 Guia Del Usuario página 3

Levenhuk Wise PLUS 10x56 Monocular with Reticle
EN
Never, under any circumstances, look directly at the Sun, another bright source of light, or at a laser through this device, as
it may cause PERMANENT RETINAL DAMAGE and may lead to BLINDNESS.
Levenhuk Wise PLUS 10x56 monoculars perform equally well in the countryside and within the city limits. They are perfect for those
who want to observe birds or animals in their natural habitats; those studying urban architecture; and even those who enjoy watching
a football game at a stadium.
Features:
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Quick and precise focusing;
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Comfortable twist-up eyecup;
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Rangefinder scale for convenient measuring of the observed object's size or distance to the object;
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Adaptable to a tripod (purchased separately).
The kit includes: monocular, eyepiece and objective lens caps, strap, pouch, optics cleaning wipe, user manual and warranty.
Reticle
This device is equipped with a rangefinder scale. It consists of vertical and horizontal lines with divisions on the lens and enables the
measurement of the height, distance, and size of a target as well as the angle between two close targets (or between the two ends
of one target). A division value on both vertical and horizontal lines equals 5mils (360º equals 6400mils) and, therefore, the distance
between two big nicks on a scale equals 10mils.
The reticle also has an additional scale on the bottom half of the lens that enables the quick measurement of the distance to a target
2m high.
The reticle appearance in your model may differ from the one in this user guide.
Using the reticle to calculate distance
When you know the target's size in meters, calculate the distance to the target in kilometers using this formula:
where S is the distance to the target in km, H is the estimated height of the target in m, and w is the vertical angle of the target in mil.
For example, the estimated height of the lighthouse shown in fig. 1 is 30m, and its vertical angle is 75mils. The distance to the target
is calculated as follows:
Therefore, the distance to the target is 0.4km.
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Fig. 1
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