Charlotte--
Modern solid state signal generator capable of the same specs will cost a lot less and be far more valuable to you in the long run. Imports are around, check the internet for sales of such devices.
AF signal generator is the same, if it can meet the output specs, solid state modern unit will do you fine.
A good quality Digital Mulitmeter (DMM) will beat the old VTVM recommended there -- is nice to have an Analog bar scale below the digital readout to see "trends" when adjusting certain trimmer, but not absolutely necessary.
BUT -- And this is important! -- Unless there is a circuit fault in one of the tuned circuits that necessitates replacement of components, you likely will not have to perform realignment of the majority of circuits in that old 101. Matter of fact, if you clean all controls and contacts, clean the circuit board connectors, blow out the dust, it is typically the case that most of the internal adjustments will fall right back into factory spec. Can't emphasize this enough, there are far too many old rigs out there that have suffered the "golden screwdriver" of alignment when all they really needed was a thorough cleaning and a spritz or two of CAIG spray in the appropriate places.
Your present problem with that 101 is very likely a dirty trimmer pot on the regulator board. Read my other post to you on the subject.
Alignment does not correct a wandering circuit. Attempts to align a circuit that is not functioning properly WILL compound problems, likely turning the rig into something unusable with a high repair bill and trip to the shop.
I know.
Made a little bit of money from that common mistake that hams often make over the years.
Don't do it.
KE3WD