It was interesting having to use a Megger at one end,
but for other
blows of 6000 amp 600v fuses we had a Moh meter, which used a null meter
to indicate the conductance. (hopefully I remembered all the right terms).
Possibly a 'Mho meter'? 'Mho' (Hom backwards, of course) is the old neame
for a Siemens, that is a reciprocal ohm, the unit of conductance.
-tony