Use the isogonic chart (Fig 3), or current United States Geological Survey (USGS), Bureau of Land
Management (BLM), or another map to determine magnetic declination at your position. Declination
can be east, west or even 0°, from your current position. At 0° declination, true north and magnetic
north are aligned.
1.6 Index Lens (Fig 1)
The bubble shaped index lens magnifies the graduated dial. Also, notice the
green
index line in
the center of the index lens. Read bearing at this line.
1.7 Viewing Lens (Fig 1)
Use the viewing lens to magnify small writing on a map.
1.8 Double Prism Alignment System (Fig 1)
With a partner, use the double prism alignment system to sight an object or destination.
1.9 Clip + Animal Alert / Rescue Whistle (Fig 1)
The lanyard clip provides hands-free storage of the 8097 around your neck, wrist, etc. Also,
use the whistle for a rescue signal or animal alert.
1.10 Pocket / Map Clip (Fig 1)
The detachable pocket/map clip fastens to the 8097, clips to maps, pockets, etc.
1.11 Map Scales (Fig 1)
The map scales on the clear base allow for quick position and distance calculations.
1.12 Magnetic Declination Scale (Fig 2)
Use the magnetic declination scale, on the bottom of the azimuth ring, with the adjustable
blue
orienting circle to adjust for
magnetic declination at your
position.
1.13 Protractor (Fig 2)
Use the protractor and the center
ing template (1.14) to determine
angles and map bearings.
1.14 Centering Template (Fig 2)
The centering template allows for
accurate use of the protractor.
2 -- Magnetic Declination
Magnetic declination (variation) is the difference between true geographic north (north pole) and
magnetic north (in northern Canada), with respect to your position. It is important to note magnetic
declination at your position, because magnetic declination varies and fluctuates slowly at different
rates, around the world. (Fig 3) Contact Brunton for most recent information at (307) 856-6559, or
e-mail us at [email protected].
2
3
Figure 3
Figure 2
1.14
1.12
1.13
