ARMY TM 9-1240-379-34
MARINE CORPS TM 04332A-34
Section Ill. FINAL INSPECTION
steps will certify the tank periscope as com-
3-8. SCOPE.
pletely serviceable for return to the user.
Final inspection of the tank periscope is
3-10. INSPECTION OF TANK PERl-
done after repair has been completed to be
SCOPE.
sure that it is serviceable according to
established standards.
a. Completeness. The tank periscope
must be complete with all necessary at-
3-9. PURPOSE.
taching hardware in place and secured.
Satisfactory completion of final inspection
b. Parallax (Elbow Assembly, Infrared
c. Focus (Elbow Assembly, Infrared Body
Body Assembly, and Daylight Body
Assembly, and Daylight Body Assembly).
Assembly). Look at a target at 1200 meters
(3937 feet) through the daylight body
(1) Elbow assembly and infrared body
assembly. Parallax should not exceed the
assembly. Viewing through a dioptometer,
thickness of one reticle line. If parallax ex-
rotate the diopter ring to bring the phosphor
ceeds the thickness of one reticle line,
grain of the face of the image intensifier into
loosen screw (1) and rotate eccentric (2) un-
best focus. The diopter scale should index at
til reticle line is superimposed on the target.
zero within plus or minus 1/4 diopter.
Tighten screw (1).
NOTE
If parallax still exceeds the
thickness of one reticle line,
return to depot.
