Bushnell MARINE Binoculars Instruction Manual page 5

CALIBRATING
THE COMPASS
(rotate 1 full cycle "end over end",
in a vertical plane up/down)
READING THE COMPASS
After completing the last rotational cycle, the compass is calibrated, and will display "0" degrees when the
binocular is pointing straight North (magnetic north), 180 degrees when pointed due South, etc. The chart
below shows the range of degrees corresponding to each of the 8 segments in the circle to the left of the digital
display, which represent common compass headings. For example, when the compass indicates anywhere
from 338 to 22 degrees, the North segment will "switch off" (become clear) indicating that the binocular is
pointed in a northerly direction.
Direction Deg. Range
N (360/0°) 338°~22°
NE (45°) 23°~67°
E (90°) 68°~112°
SE (135°) 113°~157°
Step 1-Pitch
Direction
S (180°)
SW (225°)
W (270°)
NW (315°)
Step 2: Yaw
(rotate 1 full cycle "spinning around",
in a horizontal plane left/right)
Deg. Range
158°~202°
203°~247°
248°~292°
293°~337°
Step 3: Roll
(rotate 1 full cycle as shown along
the binocular's center hinge axis)
Display example
(Due South)
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