Checking and correcting the reference position
Check whether the reference position is correct if altitude or compass indication is
incorrect even after calibration.
What is the reference position?
The base position of hands to indicate
altitude and compass direction.
• Position of the 1 000 m hand: 6:00
• Position of the 100 m hand (compass
hand): 12:00
• Position of the 2.5 m hand: 12:00
• The hour, minute and second hands do
not have the reference position.
44
Correct reference positions
0
0
6 7 8 9
200
5
x 1000 m
4
3
2
1
800
0
400
600