Hi everybody,

When ajusting the intonation of your guitar, should you go by the 12th fret or the 12th fret harmonic? Thanks in advance!

p.s. I apologize if this has been posted before.
i thought it was something like

getting the 12th fret harmonic to hang exactly above the 12th fret

but i'm not sure if that's a really accurate method
you test the harmonic against the 12th fret note.

If the notes sharper than the harmonic you lessen the tension in the string.
If the notes flatter than the harmonic you increase the tension in the string.
Been away, am back