On 04/06/07 13:56, george wrote:

I remember flying 'partial panel' under the hood where the compass was
an essential part of the scan..
and its unbreakable (unless you hang a magnet off it)


I wouldn't say it's unbreakable. It may not suffer from problems due
to electrical or vacuum failure (other than perhaps the light), but
it can certainly leak it's fluid or get knocked out of alignment, etc.