ARMY TM 9-1290-262-24&P
MARINE CORPS TM 006C-24&P
AIR FORCE TO 49A7-3-72/74
INSTALLING AND LEVELING AIMING CIRCLE ON AZIMUTH TEST FIXTURE ADAPTER
1 Check that when index scale coincides
with zero graduation line on azimuth scale
indicates zero.
2 Place azimuth mechanism shaft approxi-
mately parallel to and above orienting
mechanism shaft.
3 Place and secure aiming circle (3) on azi-
muth test fixture adapter with line of sight
of aiming circle directed into projector colli-
mater.
4 Turn three knob assemblies (4) counter-
clockwise until they stop.
5 Turn three knob assemblies (4) clockwise
approximately four turns.
6 Check circular level (5). Bubble should be
centered, not to exceed one half the line
forming the red circle (6) throughout 6400
roils revolution of aiming circle. If bubble
remains centered, proceed to step 11. If
not, go to step 7.