<VV> gas gauge

[Bruce Bacher]

My '65 Corsa's gas gauge quit working this past Monday.  It's pegged at way
past Full, and hasn't budged in days.

I'm having trouble finding any info on gas gauges.  The Tech Guide talks
about repairing a sending unit, but I want to determine whether the problem
is in the gauge itself before I move on to more difficult things.

Can someone tell me how to test the gauge?  I have a multi-meter, and I'm
guessing that testing it will entail the use of the meter - but I haven't
pulled it out yet to see what kind of contacts it has on it, and I don't
want to break it by giving it the wrong kind of signal.

Any tricks I should know about getting it out of the dash?