This picture shows the
view looking through an adjustable foresight
made by Centra (actually fitted to a Feinwerkbau
LG700). The picture is slightly off-centre, hence the distortion in the central
ring. Although this sight comes from an air rifle, the models used for .22
rimfire and larger calibre centrefire guns are exactly the same. The adjustments
possible with this sight are as follows:
through an adjustable foresight
a) that the cant (the movement away from the horizontal) can be
adjusted to suit the degree of 'lean' that the marksman uses. The more the gun
leans towards the shooter, the easier it is to stand upright without having to
bend the neck.
b) The thickness of
the front element can be varied, so as to make the ring seem broader, or
narrower, according to preference.
c) The diameter of
the central hole can be varied, so as to alter the gap around the aiming mark.
It is important not to make this gap too small as it can lead to a false
indication of how well the sight is centralised: see the
view through the sights for more detail.
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