TM 9-1290-357-15
Item
Designation
Function
Reference
1
Eyepiece focusing
Focuses clear definition of the reticle pattern
and field of view.
sleeve.
2
Permits telescope assembly to rotate vertical-
Elevation knob.
ly, approximately 8 (142 mils) above or
below the horizontal.
3
Telescope level vial.
Indicates when telescope is level horizontally.
4
Azimuth worm knob
Rotates the telescope assembly and azimuth
and micrometer.
scale index 360 (6400 mils) for fine
adjustments.
5
Circular level assembly.
Indicates when azimuth circle is in a horizont-
al plane.
Azimuth worm shoe
6
Disengages the azimuth worm gear allowing
(throw-out device).
rapid approximate settings in azimuth.
Coarse adjustment for measuring azimuth.
Fine adjustment when azimuth mechanism
is engaged.
7
Orienting knob.
Rotates the aiming circle (with the exception
of the orienting worm housing) in azimuth.
8
Clamping screw.
Clamps equipment securely.
9
Magnetic needle.
Permits orienting with magnetic north as
reference.
10
Magnetic needle
Magnifies the etched line on south end of
magnifier assy.
needle.
11
RED locking plunger
Locks the magnetic needle.
button.
12
Releases the magnetic needle.
OLIVE releasing
plunger button.
Section Ill. OPERATION UNDER USUAL CONDITIONS
b. Stops are provided on instrument to limit
General
the travel of moving parts.
This section contains instructions for the proper
care of the materiel, preparation for use, and op-
Caution: Do not attempt to force the rotation
eration of aiming circle M1, w/e (fig. 11). For
of any knob beyond the stop limit which may
operation under unusual conditions refer to para-
damage components or cause malfunctioning of
the instrument.
c. Keep instrument dry as possible. If wet, dry
2-7. Care in Handling
it thoroughly using a clean lint free cloth be-
fore storing.
Aiming circle M1, w/e is, in general, rugged and
suited for the purpose for which it was designed,
Note. Wipe optical elements with lens paper tissue only.
however, it will not stand rough handling or a-
d. When not in use, keep the instrument cov-
buse. Inaccuracy or breakage will result from
ered and protected from dirt, dust, moisture, chip-
mistreatment. Any instrument that is function-
ping, scratching and destruction using the pro-
ing inaccurately or contains damaged parts must
vided carrying case M6A1.
be brought to the attention of the organizational
maintenance personnel for disposition. Repair
e. Do not point instrument directly at the sun,
other than those expressly authorized will not be
as the heat of the focused rays may damage the
performed by the operator.
optical elements and the eyes.
a. Unnecessary turning of screws or other part
f. Keep all exposed surfaces clean and dry pre-
not incident to the use of the instrument is for-
venting corrosion, accumulation of dirt of any
bidden.
foreign matter, or etching of optical elements.
2-2
