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By entering the correction value the compass can calculate and automatically display the
correct value.
The magnetic deviation has values for western and eastern declination!
A
B
A
B
Geographic
North (0°)
Actual direction 300°
Point A:
Magnetic
direction 323°
Object B
Magnetic
North
Declination
23° W
Example 1: Compensation for the
west (W) declination
Geographic
North (0°)
Actual direction 300°
Point A
Magnetic
direction 278°
Object B
Magnetic
North
Declination
22° E
Example 2: Compensation for the
east (E) declination
Example 1: West declination 23°
("23, W" in the table on the next page),
uncorrected reading 323°, corrected
reading 300°
The west declination ("W") is always
subtracted.
323° - 23° = 300°
Example 2: East declination 22°
("22, E" in the table on the next page),
uncorrected reading 278°, corrected
reading 300°
The East declination ("E") is always
added.
278° + 22° = 300°
