Inductive simply means they are wound with one connection to the foil. Non-inductive caps, which Atwater Kent marked as "NI" have extended foil or multiple connections, and have better RF performance. Normally no one would mark a cap "inductive" and I'm surprised that AK did.
Incidentally if you are replacing the old capacitors entirely, I would be happy to have them, to cover up the replacements in my 185A.
adouglas (at) gis.net
Thanks, Paul
Just thought I'd ask about the caps. I bought my 185A because it had a good original finish, but the seller had already "restored" the under-chassis portion so I had no choice about that.