(a) Magnetic azimuth. Rotate the scale
The following procedures should be followed when using
the pocket transit.
to set the 0 mark on the azimuth scale under the scale
a. The following precautions should be observed
index by turning the declination screw.
(b) Grid or true azimuth. Determine the
when using the pocket transit.
(1) Handle the pocket transit with extreme
direction and magnitude of true north from magnetic
north. This information can be obtained from the
(2) When not in use, close the pocket transit
declination diagram of the appropriate military map. Set
and replace it in its case or mount. In this way, it will not
the azimuth scale so that the desired declination value is
only be protected from possible damage, but it will be
under the azimuth scale index.
readily available for future use.
(2) Turn the rear sight so that it is
(3) Never take pocket transit readings near
perpendicular (90) to the rear sight holder.
visible masses of iron or electrical circuits. Refer to the
(3) Holding the pocket transit in both hands,
following minimum safe distances:
brace arms against the body and view through the rear
(a) High-tension power lines - 60 yards
(4) the mirrored cover at an angle of
(b) Field gun - 15 yards (13.7 m).
approximately 45-degrees to the rear of the pocket
(c) Truck, shelter or tank - 15 yards
transit in order to readily view the scale reflection in the
(5) Level the pocket transit by viewing the
(d) Telegraph wires - 10 yards (9.1 m).
circular level in the mirror.
(e) Barbed wire - 10 yards (9.1 m).
(6) Rotate the body until the south-seeking
(f) Machine gun - 3 yards (2.7m).
end (black and/or wire coil end) of the needle is pointed
(g) Helmet or rifle - 1 yard (0.9 m).
toward the desired azimuth angle (for example 450), as
b. While standing at the first sighting point
viewed in the mirror.
antenna location) direct the location of the
(7) Direct the location of the second sighting
second sighting point as follows:
(1) Open the pocket transit and set magnetic,
grid, or true azimuth in the following manner:
Section IV. INSTALLATION INSTRUCTIONS
2-12. Sequence of Installation
On side leg assemblies; bottom ball joints are
The following procedures apply to
Front and rear leg assemblies; bottom ball
joints are loose.
All quick-release (expanding) pins are inserted
applicable to the 20-foot antenna.
in the proper stowage position and are closed and
The overall installation procedure can readily be
Be sure that pins are unlocked before
accomplished by a four-person crew. Several of the
attempting to release the handles.
tasks can be performed simultaneously. Two persons
All items are not unnecessarily subjected to
can start the major task of assembling the antenna. The
excessive dust, dirt, mud or other foreign materials.
other two can start to install the ground and power
Antenna quarter section reflector assemblies
cables. Thereafter, the team combination can be varied
(petals) are handled with care due to the light weight and
to accomplish other task requirements (all four, three
delicate construction of the assemblies. The reflective
and one, etc.). The following is a suggested basic
surfaces must not be damaged.
sequence of installation. The crew may change the
The antenna mounted electronics (center
sequence, as necessary, to enable them to perform the
section) is handled with care 'due to the heavy weight
installation in the most efficient manner.
and delicate construction of the equipment.
a. Assemble the antenna.
Feed tube assembly is handled with care to
b. Install ground and power cables.
prevent dirt, dust, moisture or any foreign material from
c. Anchor the antenna and shelter.
entering the opening. Also do not allow anything,
including fingers, to come in contact with the dielectric
e. Install external signal cables.
membrane at the opening.
2-13. Precautions During Installation.
Elevation actuator and cross elevation actuator
When performing the installation and assembly
are handled with care and the rod ends are not rotated to
procedures observe the following precautions, especially
put torsional stress on the boots.
in regard to antenna assembly.