2-41
(3) To view the compass through the monocular, grip the compass
with index finger on top and thumb on illumination button on bottom.
Press button slowly with thumb until proper brightness is obtained.
The image should appear as shown in Figure 2.22.
(4) The compass readings should change when you move your
head from side to side. Rotate or tap compass slightly to ensure
compass is operating correctly. Hold the monocular in a level posi-
tion to assure free rotation of the compass scale.
(5) The tick mark closest to the center of the lighted display is the
compass bearing. The tick marks are in degrees, with longer tick
marks every five degrees and bearing labels every 10 degrees.
(1) Install per paragraph 2.3.13.
NOTE
(2) Grasp the 3X magnifier and focus while observing an object
until the sharpest image is obtained.
Turn the gain control (Figure 2.23) to balance the illumination input
to the eye.
GAIN CONTROL
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