4. Locate declination scale.
5. Grasp azimuth ring in one hand, and the vial in the other. (Fig 6)
6. Hold azimuth ring stationary, and rotate vial until the arrow on the blue orienting circle points
to the value of magnetic declination at your current position.
· Make sure declination is correct (east or west).
3 – 1 Degree Graduated Dial
The 1° graduated dial has two scales, a green and a black scale and both are incremented by 1°.
(Fig 7) The green scale is for forward sighting and the black scale is for reverse sighting. The
scale increments from 0° to 360°, where 0° & 360° are the same value, and both indicate north.
In addition, 90° indicates east, 180° is south and 270° is west.
4 – Field Bearing
There are two methods to sight a field bearing – forward mirror sighting
and reverse mirror sighting. Since there are two methods and two
scales, please follow instructions carefully for each method.
4.1 Forward Mirror Sighting
This is the most accurate method of sighting a field bearing.
1. Find and set the magnetic declination at your position.
· Refer to section 2.1, Magnetic Declination Adjustment, for help.
2. Open sight cover to 45°.
3. At eye-level, sight object through sight hole, and align sighting
lines and peep sight. (Fig 8)
6
Figure 7
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