Sliding Ruler - 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 "ALL IN ONE" tool to practice your scales! Instructions included. 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! 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 ! size: 28 x 8cm Material: PVC colour: As shown Package Contents: 1 x Guitar Sliding Ruler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!