TM-9-1240-400-34-P
TELESCOPE; PANORAMIC: M115, ELBOW: M139, MOUNT: M138 AND M137
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1993
TM-9-1240-400-34-P - Page 85 of 344
TM 9-1240-400-34&P
COLLIMATION
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.
2-69
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