this was given by a friend- will this be a good piece to use for tv's for testing and alignment?

Signal sweep and vhf signal generator still needed

It probably needs a recap and calibration at minimum to work properly. These were what TV repair men used in the 50s-70s and they are usable but solid state scopes from the 70s and newer will be much easier to use, can be found working properly for $50-75 and the recap you'd do on yours will cost more in time and parts than a better newer one.

Tube most all tube scopes are best saved for people with a tube scope fetish IMHO.

You really should state the model number. I think it a 435.
It is probably a bare minimum to use for TVs. It would work fine however for use with a sweep generator for FM radio and TV alignment. The 3" round screen is a bit small. It is very portable. It would be an OK scope to start with. It does not have a triggered sweep, so it would be harder to determine timing or frequency of the signal. It was the type of scope repairmen would have in the truck when they made a house call, not often needed though.
It would be an educational unit to re-cap and calibrate. When you see test equipment with binding post input connections it is a sign that it doesn't work at very high frequencies. If it doesn't have probes already you will have to make some.
I have a similar RCA scope that someone gave me.