ARMY TM 9-1290-262-24&P
MARINE CORPS TM 00476C-24&P
AIR FORCE TO 49A7-3-72/74
5 Level elbow telescope tube level vial by
adjusting the eccentric (2).
6 Rotate azimuth ring (1) of test fixture to
3200 mils
NOTE
Elbow telescope tube level bubble
should stay centered.
7 If elbow telescope tube level bubble does
not remain centered, eliminate half the
error with aiming circle elevation knob (3)
and remaining error with the eccentric (2).
8 Return azimuth ring (1) of test fixture and
aiming circle to zero.
9 The elbow telescope tube level bubble
should remain centered. if not, repeat
steps 4 thru 8 until elbow telescope tube
level bubble remains centered.
10 With azimuth ring (1) of test fixture and
aiming circle set to zero, superimpose
aiming circle reticle lines with projector
collimator reticle by adjusting projector
collimator leveling screws.
11 Rotate azimuth ring (1) of test fixture to
3200 mils Rotate aiming circle to 3200
mils.
12 Look through elbow telescope. The point
of intersection of elbow telescope reticle
lines and projector collimator reticle lines
must coincide within 0.1 mil. If within 0.1
mil, proceed to step 17. If not within 0.1
mil, proceed to step 13.
13 Eliminate half the error with projector colli-
mator adjusting screws (4) and remaining
error with two reticle adjusting screws.
Refer to page 4-27.
14 Return azimuth ring (1) of test fixture and
aiming circle to zero.
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