TM 9-1240-400-34&P
1
Set azimuth ring (1) to "0" coincidence on azimuth testing fixture (2).
2
Set gunner's aid counter (3) to 00-00 detent.
3
Rotate elevation knob (4) and deflection knob (5)
until telescope reticle is in coincidence with
projector collimator (6) while sighting through
eyepiece (7). Both open sight (8) and index on
elevation knob (4) should indicate zero position.
If not, go to step 4.
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