(5) Rotate the sighting telescope approxi-
mately 180 degrees from original position and sight
through it. Observe the placement of the sighting reti-
Replace telescope when the change in either
cle center with respect to the target reticle center.
horizontal or vertical line of sight exceeds 2
Most telescopes will exhibit a change of approximately
0.5 milliradian (mr) (1.72 minutes). This is equal to a
telescope alignment error of approximately 0.25 (mr) or
e. Check BAGSE alignment.
one half of the noted change. See figure 2-2 to read error
(1) Center all sliders at midpoint of their ad-
Figure 2-2. Typical Telescope Alignment Angular