Question: what are the dots on the neck of a guitar
Answer: Marker dots ( see Inlay ( guitar ) ) 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 )