CATEGORIES OF INSPECTION (CONT).
c. Table 3-1 lists initial inspection procedures for the M139 elbow telescope. Final inspection procedures are
Preembarkation inspection procedures are located on page 3-29.
Table 3-1. INITIAL INSPECTION-M139 ELBOW TELESCOPE
Item To be Inspected
M139 Elbow Telescope
Inspect for signs of mistreatment, such as dents,
scuff marks, bare spots, and missing parts Check
Check for moisture and foreign matter
broken, cracked, or chipped glass.
Reticle Cell Assembly
Check for moisture and foreign matter and that
reticle is illuminated when M36 instrument light is
Check that cover assembly is secure and plate is
Objective Cell Assembly
Check for moisture and foreign matter, and that
parallax does not exceed 0.1 mil at 125 meters.