PK Series Manual (English, 2005) - Forgotten Weapons

Correct Sight Picture. Aiming with a mechanical sight means that the gunner will bring
into a straight line the eye, the rear sight, the blade, and the aiming point (target). The
blade must be brought into the center of the aiming notch, and its tip aligned with the
upper edge of the notch (see figure 3-12).
Figure 3-12. Correct Sight Picture
If one of the actions from the basic rules of aiming is performed incorrectly, shot
dispersion will occur.
Different light intensity during the day, the position of the sun, and the weather can
influence aiming. Strong light makes objects appear bigger, so the gunner instinctively
draws the blade into the notch, and the illumination of the notch or the blade when there
is a lot of sunshine causes reflection of the light, owing to which their real shape is lost,
and they appear bigger. The gunner eliminates these errors by focusing observation on
the spot where the reflection occurred, which will make the real position of the
component (notch, blade, or target) visible, owing to the accommodation of the eye
(adjustment of the lens in the eye to various sight distances).
During aiming, one eye can be closed, depending on the habit of the individual soldier.
If the gunner uses both eyes during aiming, the possibilities of observation are better,
there is less strain and the sharpness of vision is not reduced. It is important that the
gunner uses his stronger (direction) eye for aiming and decides during training whether
or not to close one eye while aiming.
UNCLASSIFIED
III - 11