shall be directed at a target 1200 meters in distance.
b. Observe reticle lines in relation to target image.
Final inspection is performed, after repair, to ensure
Any apparent movement of reticle lines when observer's
the telescope is serviceable according to established
head is moved from side to side or up and down is the
standards and to certify the instrument for return to user.
amount of parallax. Parallax for each reticle shall not
exceed 0.2 mil at the 1200 meter setting, with parallax
adjustment screw (5, fig. 1-1) at midpoint of total
The image will be sharp and clear at center of the field-
mechanical travel. Parallax of targets at 600 meters or
of-view when checked with the aid of a dioptometer.
infinity shall not exceed 0.2 mil. Parallax between the
telescope reticles shall not exceed 0.2 mil.
a. Adjust eyepiece of dioptometer until the reticle is
Filter Transfer Lever
sharp to the observer's eye.
The filter level shall be operable and seat firmly
b. Set dioptometer scale to zero (0) diopter.
against the stops.
c. Position dioptometer against eyepiece of the
Optical Transfer Lever
telescope and obtain a clear, sharp image of telescope
reticle. The telescope diopter scale shall read zero (0)
The 8 to 12 power transfer lever shall be operable
plus or minus 0.25 diopter when the target image is set
and seat firmly against the stops.
at 1200 meters.
Lamp Housing Assemblies
d. Sight through the eyepiece while rotating the
diopter scale of the telescope to its clockwise stop and
The Lamp housing assemblies shall be mechanically
note the indexed setting. Rotate the diopter scale to its
operable to permit replacement of either lamp.
counterclockwise stop, and note the indexed setting.
Eyepiece focus shall be adjustable over a minimum
range of plus to minus 4 diopters. If requirement cannot
be met, refer to paragraphs 3-7 a and g.
The lines of each illuminated reticle shall be bright
and clearly defined when observed with filter in the clear
position. Any defect, in the form of a hole, crack, or chip
a. Adjust diopter knob of telescope to obtain
appearing in the opaqued area of the reticle, shall not be
sharpest focus of the conventional and missile reticles.
brighter than the reticle lines. Such defect shall be
The line-of-sight through each reticle
cause for rejection.