@mauve
I can't recommend particular kit but I think voltmeters are more commodity, so not a big deal, and for oscilloscope I would look at PC based oscilloscope i/f's if i was buying.
Back in about 1980 I asked my Physics tutor if I could borrow an oscilloscope and he took me to the stores, found a massive Tektronics scope and said here you are, it's yours. I couldn't believe it. A few years earlier I'd tried to build one from a magazine but wasn't quite up to it but learned a lot.