## Measurement Using Binoculars

Binoculars can be used to determine range. The recently adopted M19 binocular, unlike other models, is a lightweight, compact instrument intended for use in general field observation and fire direction. The binocular's left lens includes horizontal and vertical reticles graduated in 10-mil increments (Figure 5-6). When using binoculars to determine range, the soldier must understand the mil relationship (Figure 5-7).

Figure 5-6. M19 binocular reticle.

a. The mil (f) is the unit of angular measurement used in adjusting fire. A circle has 6,400 mils. At a distance of 1,000 meters, an object 1 meter wide measures 1 mil. Change mils to meters by multiplying the number of mils times the range (distance) in thousands of meters. Obtain the unknown width or range to an obj ect using a similar method (Figure 5-7).

X - IS THE ANGULAR WIDTH OF THE OBJECT IN MILS (tf).

W - IS THE WIDTH OF THE OBJECT IN METERS.

R - IS THE RANGE OR DISTANCE IN THOUSANDS OF METERS

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### Responses

• susanne
How to measure distance with binoculars?
1 year ago