TM-9-1240-400-34-P
TELESCOPE; PANORAMIC: M115, ELBOW: M139, MOUNT: M138 AND M137
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1993
TM-9-1240-400-34-P - Page 12 of 344
TM 9-1240-400-34&P
1-9.
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS.
a.
M115 Panoramic Telescope.
(1)
Rotating Head Assembly.
The rotating head assembly is capable of 360-degree rotation (6400 mils).
It
contains a 90-degree prism which is adjustable in elevation (+300 mils) using the elevation knob.
The amount of
deflection is indicated on the deflection counter on the adapter assembly.
(2)
Elbow Assembly.
The elbow assembly has an excursion of 30 degrees and contains a penta prism, pechan
prism assembly, cell assembly, eyepiece assembly and assembled gearing.
A valve assembly is for purging and charging
the telescope.
(3)
Body Assembly.
The body assembly contains two objective lenses, reticle, deflection knob, and adapter
assembly.
The deflection knob controls deflection of the telescope.
The adapter assembly contains a deflection counter,
reset counter, two gunner’s aid counters, and associated gearing.
1-4
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