Wenger AltiNav, Инструкция по эксплуатации

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Magnetic Declination Compensation
• This Watch allows you to compensate the compass bearing at a place where
the magnetic declination is either Westerly declination or Easterly declination.
• To compensate for an object’s bearing, either subtract westerly (W) magnetic
declination or add easterly (E) magnetic declination with the magnetic bearing.
Example 1:
Westerly magnetic declination 23° and the compass needle points 323°.
• TB = MB - W. When MB = 323°; W =23°
• TB = 323° - 23°
• TB = 300°
• The true bearing is 300°.
Example 2: Easterly magnetic declination 22° and the compass needle points 278°.
• TB = MB + E. When MB = 278°; E = 22°
• TB = 278° + 22°
• TB = 300°
• The true bearing is 300°.
• Check the coming section “Calibrating the Compass” on p.39 for more details
of the setting.
Compensate the Bearing
with Westerly (W) Magnetic Declination
magnetic bearing
323°
true bearing
300°
true north
0°
magnetic declination
23°W
magnetic
north
point A
object B
True Bearing (TB) =
Magnetic Bearing (MB) - Westerly Magnetic Declination (W)
300° (TB) = 323° (MB) - 23° (W)
Compensate the Bearing
with Easterly (E) Magnetic Declination
magnetic
bearing
278°
true bearing
300°
true north
0°
magnetic declination
22°E
magnetic
north
point A
object B
True Bearing (TB) =
Magnetic Bearing (MB) - Easterly Magnetic Declination (E)
300° (TB) = 278° (MB) - 22° (E)
Compensate the Bearing
with Westerly (W) Magnetic Declination
magnetic bearing
323°
true bearing
300°
true north
0°
magnetic declination
23°W
magnetic
north
point A
object B
True Bearing (TB) =
Magnetic Bearing (MB) - Westerly Magnetic Declination (W)
300° (TB) = 323° (MB) - 23° (W)
Compensate the Bearing
with Easterly (E) Magnetic Declination
magnetic
bearing
278°
true bearing
300°
true north
0°
magnetic declination
22°E
magnetic
north
point A
object B
True Bearing (TB) =
Magnetic Bearing (MB) - Easterly Magnetic Declination (E)
300° (TB) = 278° (MB) - 22° (E)