I seem to be missing something on this discussion on degaussing parts of the Ercoupe for the mounting of a compass. I have lost the original post but my impression was that he wanted to mount a vertical card compass to the centre pillar on the windscreen. I am sure my Ercoupe has a alloy centre support pillar and as such should not be magnetically sensitive. Other items around that area are also alloy except perhaps for the roll over hoop which I think has a steel side window guide.
If you start degaussing around the instrument panel make sure you have no electrically driven instruments near the degaussing coil. It does wonders with the calibration of these. I include the tacho in this. We used to calibrate the tacho's with degaussing coils. I cannot see anything in a Coupe that would have made the level of deflection error seen in the original post. Take your time on this one and tread carefully. You may end up with more problems than you anticipated. Regards Brian Garrett 5 O'Donnell St Viewbank 3084 Australia (613) 9459 1779 Sonerai II VH-JGB 415C VH-???
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