Re: Intonation tuners
Technically, a needle or strobe type would be better than an LED / bar light type. There’s a lot of increments in between the bars you can’t really see what’s going on. I use an old BOSS with a needle (I think it’s a TU-3?).
I don’t own a Peterson, but usually for a strobe type you just set what note you are tuning and when your instrument is at pitch the dark/light stripes stay still and are stable, not drifting right or left