Guitar intonation adjustment involves testing the intonation of each string by comparing the fretted 12-fret octave with the harmonic produced at the same fret. If the fretted note is sharp, the string needs to be lengthened; if the fretted note is flat, then the string needs to be shortened.
The way in which the length of the strings is adjusted depends on the type of bridge fitted on your guitar. In our guide to adjusting electric guitar intonation, you’ll find out how to adjust intonation on a range of guitar bridge styles…