Don't have the Anson or the DH89 in FSX, but Ants Tiger compass is correct, the cross barred arm of the needle is magnetic North, so with a modern standard rotatable compass card with the 'T' type railway lines, if you align the tail of the T with the cross barred needle then read off the degrees where the front of the compass has its lubber line, this should agree with the FSX (or FS9) heading reading at the top of the screen. Trouble is Nigel has not made that possible in his Avro's without modifying his model .mdl & adding a bit to his panel.cfg.
BTW M$ do have the seemingly weird reaction in a turn correct, where it goes in reverse initially, I think it also lags badly on a Northerly heading & they have incorporated the magnetic deviation, but at the old rate, not the current rate of change of the magnetic North pole! So it can be a couple of degrees out.
My P8 compasses work like Ants, but do not have a tooltip text readout of heading.
Keith
P.S. I once flew a Tiger that had a full cross railway lined compass - & yes I took off & flew on a reciprocal heading for some minutes.........
![Hiding :hide:](./images/smilies/hiding.gif)