4. Rotate azimuth ring until reflection of blue orienting circle
outlines the red circled "N".
· Make sure base is level and sighting lines and peep
sight are aligned.
5. Position Eclipse 8099 close enough to read field bearing
in magnified index lens.
· Read bearing from green
scale at the green index
line – 170°, Figure 9.
4.2 Reverse Mirror Sighting
Reverse mirror sighting is another method of sighting a
field bearing.
1. Find and set magnetic declination at your position.
2. Open sight cover to 120°.
3. Hold Eclipse 8099 at waist-level, with sight cover
pointing at you. (Fig 10)
4. Sight object in the mirror and align mirror line with the
reflection of the cover line.
5. Rotate azimuth ring until blue
orienting circle
surrounds the red circled "N".
· Make sure mirror line and reflection of cover line are
aligned with sighted object.
6. Read field bearing from the black
scale in the magnified
index lens – 170°, Figure 11.
5 – Direction Of Travel
When field bearing to a destination is already known, set
compass to the known field bearing, sight and travel to the
destination. The bearing you travel is known as the direction
of travel. The following example uses forward mirror sighting.
1. Set magnetic declination.
2. Open sight cover to 45°.
3. Rotate azimuth ring until compass is set to known field bearing, using green
scale.
7
Figure 9
Figure 10
Figure 11
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