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 13 of 344
TM 9-1240-400-34&P
b.
M138 Telescope Mount.
(1)
Support Assembly.
The support assembly consists of an eyebolt assembly and a telescope clamp to hold the
M139 elbow telescope in place.
(2)
Bracket Assembly.
The bracket assembly contains the electrical system.
A variable resistor adjustment knob
controls the various settings for illumination.
A receptacle is provided for connection of a 24-volt dc power source for the
instrument light.
(3)
Adapter.
The adapter contains a deflection adjusting cam and an elevation adjustment worm for adjustments in
deflection and elevation.
An elevation locking lever provides for adjustment at the desired setting in elevation.
1-5
Back to Top
