[IvanK]

Err No.

Heading indicator is spot on. you are making the same error that many RAF pilots made, There was a real Human factors issue with this compass.

1. Align Compass verge ring such that Parallel lines are parallel with the big pointer with a small cross bar on the top.
2. To remove the ambiguity ensure the red N is being pointed to by the large needle with crossbar.
3. Read the Magnetic heading from the blue text ... (or 12 O'clock position on the compass verge ring)
4. set this on the DG. Also note DG gyro precession is modelled as well, as are compass turning and acceleration errors.

There is a good description on this forum.

As to the AH ... search the forums for the discussion. Basically Gyro precession and toppling are modelled.

I have navigated all over this map using the RAF compass and DG system it works well if used as it was designed to be used.