Classical guitar fingerboard and placed at points that divide the length of string mathematically. The strings' vibrating length is determined when the strings are pressed down behind the frets. Each fret produces a different pitch and each pitch spaced a half-step apart on the 12 tone scale. The ratio of the widths of two consecutive frets is the twelfth root of two (formula_1), whose numeric value is about 1.059463. The twelfth fret divides the string in two exact halves and the 24th fret (if present) divides the string in half yet again. Every twelve frets represents one octave. This arrangement of frets
Bass guitar the strings, and extending the lower string scales allows the string to produce harmonics that are more in tune with the fundamental. To keep proper pitch across all frets in a multi-scale bass guitar, a fanned fret design is applied to the fingerboard. In this case, the frets extend from the neck of the instrument at an angle, in contrast to the standard perpendicular arrangement in standard neck designs, in which the fret spacing is wider for the long scale and closer for the short scale. This is not to be confused with perfect intonation across the whole neck, which