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|  MIL-T-5O382(MU)
4.7.2.2.4 Lift. - This test may be performed In conjunction with the
backlaxh test outlined in 4.7.2.2.2. The test is performed after returning
the line of sight to the point of coincidence by observing where the hori-
zontal reticle line of the panoramic telescope falls with respect to the
previously established position (4.7.2.2.3). They must coincide within the
limits of 3.705.1.
4.7.2.2.5 Five mil click mechanism. - This test may be performed by
using visual and tactile inspection techniques. The result of this inspec-
tion shall conform to the requirement outlined in 3.8.2.7 when performed at
the temperature specified.
4.7.2.2.6 Rapid traverse (reset counter). - This test is made by
assembling a testing mechanism capable of providing an RPM output specified
in 3.8.1 to the azimuth knob of the panoramic telescope by means of-an
appropriate adapter. After subjecting the panoramic telescope to the RPM
for the time specified, the reset counter and the azimuth counter shall
follow as required in 3.8.1 and the reset counter shall reset to 3200 mils
at the end of each speed test required in 3.8.1. The gunner's aid counter
shall remain as specified in 3.8.1.
4.7.2.2.7 Resolution. - This test may be performed after directing the
line of sight toward a target similar to that specified in MIL-O-13830. The
actual test is performed as outlined in MIL-O-13830. Observe the definition
pattern on the target. The patterns must be resolved in the four meridians
within the limits outlined in 3.7.8.
4.7.2.2.8 Open sight. - This test is accomplished by using the setup
in 4.7.1. The test is performed by positioning the optical axis of the
auxiliary telescope, F5549108 close to, but not on the vertex of the "V"
grooves of the open sight and observing where the optical axis of the
auxiliary telescopes fall upon the target with respect to the 20 mil square
of the target, see Sheet 8 of Drawing F8213899. The optical axis umst fall
within the square to conform with the tolerance specified in 3.7.1.1.
4.7.2.3 Elevation.
4.7.2.3.1 Elevation and plumb travel. - Return the panoramic telescope
to the position outlined in 4.7.1. Scribe an index line on the elevation
knob in line with an index scribed on the head. Perform these tests-by.
rotating the azimuth fixture plate to direct the panoramic telescope's
optical axis toward a plumb line. Position a plumb line in coincidence
with the center vertical reticle line. Position the vertical target line
in coincidence with the plumb and vertical reticle line and raise or lower
the target to obtain coincidence between the target horizontal line and the
horizontal reticle line of the panoramic telescope's reticle. The plumb
travel test is performed by actuating the panoramic telescope's elevation
knob from the zero setting to each extreme. The line of sight must travel
to the limit lines of the target to assure compliance with 3.7.3 and must
follow the center vertical line from zero elevation within the width of the
target limit line to assure compliance with 3.7.3. Repeat this procedure at
approximately six different azimuth settings by turning the panoramic tele-
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