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|  MIL-C-4855C(AR)
4.5.4.4 Operability. - The collimator assembly shall be manually
set up in the operational position from the carrying position.
This shall be a visual and tactile examination of the collimator
for conformance to the requirements specified in 3.4.4.4.
4.5.4.5 Knob travel. - There shall be a tactile examination for
movement of the knobs to provide full locking and free movement
of each specific component as specified in 3.4.4.5.
4.5.4.6 Knob locks -The locks shall be operable and shall prevent
movement of locked items when exposed to the requirements of 3.4.1.2.
o
o
At 60 F to 90 F, eight knobs of the collimator shall be locked by
application of "Torque to Secure", values in Table I. There shall
be no movement of locked items when the specified, "Test Values",
are applied in conformance with the requirements of Table I. Torque
and force values shall be applied with standard measuring equipment.
4.5.4.7 Telescope alignment. - The torque required to rotate the
scope to center the level shall be measured with standard measuring
equipment. The measured torque valued shall not exceed the values
specified in 3.4.4.7 for the temperatures indicated.
4.5.4.8 Azimuth fine adjustment. - The torque required to operate
the azimuth fine adjustment shall be measured with standard measuring
equipment attached to the fine adjustment knob. The measured torque
values shall not exceed 5 inch pounds of standard ambient temperature
o
o
(+60 + 90 F) and shall not exceed 10 inch pounds when exposed to
extreme temperature, in accordance with the requirements of 3.4.4.8.
The torque withstanding load test of the azimuth fine adjustment at
each travel stop position (in and out), shall be measured with
standard measuring equipment attached to the knob. At each temper-
atures specified in 3.4.4.8 rotate the azimuth fine adjustment to
the travel stop position, then apply the specified 25 to 30 inch
pound torque load to the knob. During this torque application
there shall be no evidence of knob rotation. Upon return to stan-
dard ambient temperature, and subsequent to torgue applications the
azimuth fine adjustment knob shall be manually rotated in and out
to each stop. During these rotations there shall be no tactile
evidence threads. The azimuth fine adjustment shall conform to
the requirements of 3.4.4.8.
4.5.4.9 Fasterning devices. - The inspection of fastening devices
shall be accomplished by means of a visual and tactile examination
of catches or similar fastening devices used to secure the cover,
to determine compliance with 3.4.4.9.
4.5.4.10 Carrying handle. - The carrying handle shall be inspected
by a visual and tactile examination initially to determine compli-
ance with 3.4.4.10. The collimator shall then be subjected to
being lifted three feet from the ground and returned, at least 50
full cycles by means of the carrying handle. Subsequent to the
lifting test, the handle assembly shall again be examined to deter-
mine any detrimental effects or indication of poor workmanship.
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