Yes. I believed that the whole point of the pendular suspension of the compass card was to eliminate the need for balance weights, so that the compass could be used anywhere in the world.
It looks like anyone thinking of flying from London to Capetown will have to consider the need to change the compass half way.
A little more info from Airpath, after further enquiry, including the above London - Capetown example.
Only if airplane was moving base from north to south would there be any noticeable difference and any compass will function in any location. Static balance would be slightly off (1-3 degrees) but design incorporates 18 degrees of tilt/turn.
GS
Since the magnetic dip is 60 odd degress+ in the uk, and 60 odd degrees- in South Africa, I'm more confused than ever now!
MJ
