A.Move the quadrantal spheres closer to the compass
B.Raise the heeling magnet if the red end is up
C.Remove some of the Flinders bar
D.Raise or lower the athwartship magnets

A.If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should add some magnets.
B.If the blue ends of the magnets are aft you should lower the fore-and-aft tray
C.If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should reverse the magnets
D.If the blue ends of the magnets are forward，and the fore-and-aft tray is at the bottom，you should add some magnets