Neck

The neck of the guitar is a long piece of wood that is projected from the body of the guitar. The neck is what holds up the fretboard. The neck also is what holds the truss rod within it.

Description
The neck of a guitar contains the guitar's frets, fretboard, tuners (technically part of the headstock), headstock, and truss rod. The bending stress on the neck is considerable, particularly when heavier gauge strings are used (see Strings and tuning), and the ability of the neck to resist bending (see Truss rod) is important to the guitar's ability to hold a pitch during tuning or when strings are fretted.

Inlays on the face of the fretboard are usually placed at frets 3, 5, 7, 9, 12 (double dot to indicate the octave), 15, 17, 19, 21, 24 (double dot to indicate the second octave). It's also common that there are marker dots on the side of the neck, near the edge of the fretboard, where the player can easily see which fret he or she is on. Sometimes the dots are replaced with bars, the octave positions having a wider bar. Classical guitars almost never feature position markers, especially on the fretboard's face, whereas electric guitars usually do. This is due to several factors: 1) Electric guitars do not rely on a resonating body chamber to produce sound and therefore the inert bodywood may be carved more deeply to allow better access to higher frets. 2) Electric guitars also sport an extended high-end range, due to the above reason. Typically, up to 24 frets are used. 3) Electric guitars vary greatly in terms of scale length, depth of lower and - if present - upper rout and where these connect to the neck at its heel, and number of frets (usually between 21 and 24). In contrast, classical guitar dimensions are standardised, with the 12th fret aligning with the neck-end of the body, use of only 19 frets, and scale length of 25.6".