The reason is that we hold our head so high up in looking at our game that we fail to see the rear sight at all.
Battle sight: The position of the rear sight when the leaf is laid down.
To show how to bring the rear sight, the front sight and the target into the same line,—that is, to show how to sight properly.
The rear sight has a wide rectangular notch; the front sight is plain, with a square top, as shown.
As previously explained, raising the rear sight increases the range of the bullet and lowering it decreases the range.
The distinctive features of these sights are the ivory bead of the front sight and the horizontal ivory line in the rear sight.
Likewise if you move the rear sight to the left (take left windage), the bullet will strike to the left.
Most target arms have the front sight non-adjustable, and the rear sight adjustable for both windage and elevation.
By battle sight we mean the position of the rear sight with the leaf down.
The illustration on the opposite page shows the rear sight leaf (raised), the drift slide (E), and the wind gauge (F, L.).