[clay68c10]

You could use a short piece of wire the right size and an alligator clip meter lead end. Maybe a paper clip would be a close size. Just don't go too big or you'll stretch out the pins.
If you have a Hz (frequency) function on the Fluke it should read. Otherwise it probably won't, the ground pulse is too fast.

Ideally a noid light is your go-to in this situation.