Bass guitar the 3rd, 5th, 7th, 9th fret and 12th fret (the 12th fret being the octave of the open string) and on the octave-up equivalents of the 3rd fret and as many additional positions as an instrument has frets for. Typically, one marker is on the 3rd, 5th, 7th and 9th fret positions and two markers on the 12th fret. The long scale necks on Leo Fender's basses—with a scale length (distance between nut and bridge) of — set the standard for electric basses, although "short scale" instruments, such as the Höfner 500/1 "violin bass" played by Paul McCartney, and the
Inlay (guitar) Inlay (guitar) Inlay on guitars or similar fretted instruments are decorative materials set into the wooden surface of the instrument using standard inlay techniques. Although inlay can be done on any part of a guitar, it is most commonly found on the fretboard, headstock —typically the manufacturer's logo— and around the sound hole of acoustic guitars. Only the positional markers on the fretboard or side of neck and the rosette around the sound hole serve any function other than decoration (the rosette serves as reinforcement). Nacre ("mother of pearl"), plastic and wood are the materials most often used as inlay.