Bortivier Guitar Sliding Ruler for the Practice of Pentatonic, Diatonic and Mode Scales/Pentatonic Sliding Ruler Easy to Use

COLORFUL SHAPES - The five positions of the pentatonic scales are presented in bright colors to help you memorize them and clearly see their relation to one another. FOR BEGINNERS - Learn your first pentatonic scale in no time and impress yourself and your friends around! Sliding Ruler - Magic tool for the practice of PENTATONIC, DIATONIC and MODE scalesPentatonic Sliding Ruler for Guitar The essential tool for ALL Guitarists FOR GUITARIST OF ALL LEVELS - Give yourself the gift of having the "" tool to practice your scales! Instructions included. FOR MORE ADVANCED GUITARISTS -Practice your pentatonic scales, your Blues scales, your diatonic scales and the seven modes on any key by having the complete fretboard in front of you! Discover new combination for chords by clearly seeing the degrees of the scales everywhere on the fretboard !