Great meters. Pretty much bullet proof. I bet ya just pop in a new battery and plug in some probes and you are off and running. Also the fuses may be blown, no biggie. Just grab a few on amazon. The displays and bezels are available from fluke and occasionally you will get display fade if somebody took it apart too many times. Its usually just the zebra connectors. If that is the case just put two layers of masking tape on the inside of the bezel to press a little harder on the display if some segments are weak or out, but i bet it will be fine. Get good quality probes too. Otherwise you are good. And remember, fluke does repair them if its just not right.
Quick test. Continuity and make sure the meter beeps, then wet your fingers and measure your resistance. They are rarely out of CAL enough to matter unless you are doing really accurate stuff.