TM 5-6675-328-14
CAUTION
Whenever leveling mirror is moved or adjustments are made, mirror assembly must be in up and locked
position to prevent damage to delicate knife edges. Only exception to this rule is when tangent screw is
being used to obtain small amounts of azimuth (rotational) correction.
(1)
Move AS-1 and mounting base to test post; mount so that it is aimed at mirror and adjust for vertical
displacement.
(2)
Level AS-1 using stride level.
(3)
Attach auxiliary lighting unit to AS-1 and turn it on.
(4)
Carefully lower leveling mirror into operating position using cam lever.
(5)
Using focusing knob, focus the AS-1 to pick up the reflected reticle image from the mirror.
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