perpendicular to the line of sight.
15
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MEASURE THE DISTANCE WITH SCALE-MARKED GLASS
1. Aiming line
2. Horizontal line with measuring notches
3. Measuring line
4. First object
5. Second object
The glass cover with the aiming lines ,is provided with notches which allow you to
measure the distance from an object when the distance between the target and
another visible object on the same level of the observer on the horizontal line of
the glass .
10 notches is 0.9cm，each notch is 1/9cm,the distance between eyes and the
Aiming line is 12cm.
For example ,if the distance between two objects is 36m and the notches on the glass are 12 .
400m is the distance between you and the object.
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