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Table 2-1. BAGSE Alignment Check
Up
TM-9-4931-583-30-P Boresight Kit T-102300-101 (
Next
Figure 2-3. Mirror Alignment Example
TM 9-4931-583-30&P
(5) Rotate the sighting telescope approxi-
NOTE
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
mr error.
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
examples.
(1) Center all sliders at midpoint of their ad-
justment.
Figure 2-2. Typical Telescope Alignment Angular
Displacements Samples
2-5

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