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MIL-T-46316B(MU)
3.8 Illumination.
3.8.1 Level vial.-  The lamp for level vial illumination, when
energized with 18 VDC and then 28 VDC, shall provide sufficient illumina-
tion at each voltage for the level vial markings to be clearly defined
when observed in a darkened area.
3.8.2 Reticle.-  The lamp for reticle illumination, when energized
with 18 VDC and then 28 VDC, shall provide sufficient illumination at
each voltage for the reticle markings to be clearly defined when observed
in a darkened area. Rotation of the rheostat knob shall cause a change
in illumination of the reticle only.
3.9  Operability. -  The torque required to operate the following
controls shall be within the values specified when the controls are ro-
tated at a standard ambient temperature of 60 to 90F. The torque
values obtained when the telescope is exposed to the extreme temperatures
of 3.3.2 shall not exceed the values obtained at standard ambient tem-
perature by more than 100 percent.
3.9.1 Cant correction knob.-  With the level vial bubble centered
and the kingpin holes and eyepiece arm vertical, the running torque
required to rotate the cant correction knob shall be 7 inch-pounds 1.0
inch-pound.
3.9.2 Reticle shift lever.- The running torque required to rotate
the reticle shift lever shall be 3 inch-pounds 1.0 inch-pound.
3.9.3 Mirror, plunger, arm and rheostat.- The level vial mirror,
plunger knob on the reticle shift lever, eyepiece arm and the rheostat
knob shall be mechanically operable when exposed to the extreme temperat-
ures of 3.3.2.
3.10 Insulation resistance.-  Insulation resistance shall not be
less than 10 megohms with a potential of 100 volts direct current applied.
4.
QUALITY ASSURANCE PROVISIONS
4.1 Responsibility for inspection.-  Unless otherwise specified in
the contract or purchasr order,the supplier is responsible for the per-
formance of all inspection requirements as specified herein. Except as
otherwise specified, the supplier may utilize his own facilities or any
other facilities suitable for the performance of the inspection require-
ments specified herein, unless disapproved by the Government. The
Government reserves the right to perform any of the inspections set forth
in the specification where such inspections are deemed necessary to assure
supplies and services conform to prescribed requirements.
4.1.1 General Provisions.-  The component and subassembly inspec-
tion requirements of MIL-F-13926 form a part of the Quality Assurance Pro-
visions of this specification. Definitions of inspection terms shall be
as listed in MIL-STD-109.
4.

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