Thanks, Sam and Jerry.

Will give it a try with a (more or less accurate :-) ) mv AC-source.
All the other ranges work fine, as far as I can tell, only the mV AC
range overflowed. Strange that none of my other multimeters show this
behaviour (or at least much less; about 30-40mV on the 200mV range).

All that's left to do is find some good testleads for this Fluke, and
it'll be ready for everyday use.

Grtz,

Peter PE1VCC