Specifications - Levenhuk WISE PLUS 10X56 User Manual

Calculating the target's size using angle readings
When you know the distance to the target in kilometers, you can calculate its height and width in meters using the distance
measurement formula:
where H is the estimated height or width of the target in m, S is the distance to the target in km, and w is the vertical or horizontal
angle of the target in mil.
For example, the estimated distance to the tank shown in fig. 2 is 0.25km, the vertical angle is approximately 10mils, and the
horizontal angle is 20mils. Calculate the size using the formula:
Therefore, the tank's height is 2.5m, and the tank's width is 5m.
Using the additional reticle to calculate distance directly
If the target's height is known to be 2m, you can calculate the distance to it using the additional reticle on the bottom half of the lens
without using a formula. To do so, place the target on the horizontal line of the reticle. The point where the target touches the scale is
the distance in meters. For example, the distance to the tank shown in fig. 3 is 550m.

Specifications

Magnification
Objective lens diameter
Field of view
Exit pupil diameter
Eye relief
Relative brightness
Twilight factor
Close focus
Tripod adapter thread
Operating temperature range
The manufacturer reserves the right to make changes to the product range and specifications without prior notice.
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Fig. 2
Fig. 3
10x
56mm
6,1°
4.9mm
17mm
24
24
3.5m
1/4"
–10... +50°C / +14... +122°F
4