12
．
Determining the distance to an object of known width
If the height or width of an object is known or drawn from a map,it’s distance will be defined by simply inverting the
calculation mentioned above the description in point 9 10 and11 .
In other words ,if the width of an object with an angle of 8,is 1/7 of the distance according to the table 2 ,the same will
be reverse case , the distance is 7 times wider than the
width or height.
Example
The angle measured between object B and C (see figure)
is 34°. The distance between B and C is 5 km according to
the map column IV ,Table 2 indicates 66%.
When using this method,the object of known width must be
perpendicular to the line of sight.
13
．
Determining the distance with scale-marked glass
1. Aiming line
2. Horizontal line with measuring notches
To Next Page
Loading...