ARMY TM 9-1290-262-24&P
MARINE CORPS TM 00476C-24&P
AIR FORCE TO 49A7-3-72/74
4-4. TEST AND ADJUSTMENT PROCEDURES (cont).
COLLIMATION (cont)
15
Aiming circle reticle lines and projector
collimator reticle lines should remain within
0.1 mil tolerance. If not, repeat steps 10
thru 14 until tolerance is met.
16
Loosen two elevation micrometer knob
screws (5).
17
Hold elevation knob (6) and turn elevation
micrometer scale (7) to register zero.
Tighten two elevation micrometer knob
18
screws (5).
19
Recheck that elbow telescope reticle is still
in coincidence with collimator reticle.
20
Turn elevation knob (6) until all three ele-
vation scale setscrews (8) are accessible.
Loosen three elevation scale setscrews
21
(8).
22
While sighting through elbow telescope
eyepiece (9), turn elevation knob (6) to
bring elbow telescope reticle into coinci-
dence with collimator (10) reticle.
23
Turn elevation scale (11) to register zero.
24
Tighten three elevation scale setscrews
(8).
25
Loosen two azimuth micrometer knob
screws (12).
26
Hold azimuth knob (13) and turn azimuth
micrometer scale (14) to register zero.
27
Tighten two azimuth micrometer knob
screws (12).
4-32
