Compass Flashcards
1
Q
What does pendulous suspension provide for the compass?
A
Horizontal movement.
2
Q
What causes compass rotation when dip is present?
A
Acceleration.
3
Q
How is aperiodicity achieved inside a compass?
A
Damping oil.
4
Q
What is the acronym for the acceleration error for a compass in the northern hemisphere?
A
NANDS - North - accelerating north - decelerating south
5
Q
What is the acronym for the turning error for a compass in the northern hemisphere?
A
NUNOS - north - undershoot north - overshoot south
6
Q
Acceleration errors are worse when travelling blank to blank on a direct reading compass.
A
East to west.
