I’m working on setting up my dusted-off guitar and bass and for intonation I need a better quality tuner then the Korg GT-3 I have. Which ones will help with the intonation? One that shows how much any note is off, not just the one of the open string.
If you get yourself a computer instrument interface (I like the Scarlett 2i2) you can use a multitude of software tools which provide precision tuning views. I often use the really nice free version of Guitar Rig.