The Don’t Fret® decal has 12 lines indicating a complete chromatic scale of one octave. The lines---5 white, and 7 in other colors---are arranged in the same pattern as that of the piano keyboard, with its 5 black and 7 white keys. With the full set of lines it is easier to teach finger patterns, keys (tonalities), and intervals such as whole- and half-steps.
Violin : 1/16 - 4/4 (No 7/8 size)
Viola : 12" - 16"
Cello : 1/8 - 4/4