Before take off the gyro compass has to be aligned with the whiskey compass and during the flight it has to be checked for drift while flying in a straight line.
Look here to learn about the magnetic compass characteristics.
The Whiskey Compass is available in a panel mount and in a pedestal version (on top of the panel).
The panel mount version only needs 10 mm free space below the compass.
A strong and precise stepper motor guarantees smooth movements, also in a shallow turn!
The instrument is illuminated by a led (optional), switched by the flight simulator.
Pedestal