Mav - not shown in the picture is the W for West, as used with variation (E will be on the left hand side). You will see it on a proper CR-3, or even a cr*p 5 - that's just one of my drawings and I forgot to put it in. The explanation is in our notes and in our lectures
but if you add CG to the Cadbury's Dairy Milk routine (Creamy & Good) you should find it easier:
C D M V T C G
Very important is the realisation that, once you have past the Pole, you are physically heading South while you are flying North on the chart. That seems to be the worst bit that people have to grasp.
And I'm still using convergency in North Alberta.........
Edited: Just added the letters to make it clearer...
