If you are talking about the big "compass" on the panel, the DG (directional
gyro) or HI (heading indicator), it is not a compass per se. It requires a
vacuum pump to make it work (some use electrical gyros) These are the face
mounted instruments. They also drift a little and should be reset every 30
or so minutes to the magnetic compass...
Aircraft compasses are magnetic and look like the ones mounted on the dash
of cars, liquid filled bubble and all.
Bill
-----Original Message-----
I've looked at aircraft compasses, thinking I would install one in a spare
glovebox door. Since the aircraft compasses are face mounted, they'd work in
the door if you have one to cut. There are some suitable vintage ones on
eBay from time to time, and others listed on army/navy surplus store web
sites. I haven't bought one yet, but I did get an aircraft clock that I
installed on a spare glovebox door.
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