Does this come in a left handed configuration?

I am glad to announce that the Ruler for left-handed is actually tested and should be released somewhere end of January!

One commenter stated that a note was missing from the pentatonic scale. Is this correct? Has it been fixed?

This is an excellent music theory tool. The minor pentatonic scales are set out on one side and the major pentatonic on the other. If you use this as a modal training tool or a CAGED system training tool it works very well. I got used to the semi tone interval being missing as it was clear what notes they were when looked at in the context of the key you are in. I would buy this in a New York moment even with this situation. Its a hell of a tool!!!

Why is this so pricey for a laminated piece of cardboard? And what’s the benefit over other cheaper scale tools?

If you want a piece of laminated piece of cardboard I can sell it to you for only $0,50 but if you want a piece of art, get my Sliding Ruler for Guitar! It took a long thought process and many trials and error before I could get to this result! You don't pay for the plastic, as you don't pay for the paper when you buy a book, you pay for hard work the author have put into it! Please, read the positive reviews I got for this Ruler and try it with a guitar in your hand and just go through the notes you see into it. You'll be amazed to discover new paths to your creativity and a new understanding on how your guitar works!

Did you fix the error on the chart or are you planning to fix it?

Yes, the error has been fixed! It only happened in a limited production batch! If this is your case, don’t hesitate to ask for a new one through our website.

Ouriel Ouaknine Sliding Ruler Magic Tool For The Practice Pentatonic

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Description

🎯 Slide into mastery with the ultimate guitar scale companion!

BEGINNER FRIENDLY - Step-by-step instructions make learning your first pentatonic scale effortless and fun.
ADVANCED EXPLORATION - Unlock new chord combinations by clearly seeing scale degrees in any key.
RISK FREE CONFIDENCE - Backed by a no-questions-asked buyback guarantee—your satisfaction is guaranteed.
VISUAL LEARNING BOOST - Bright, color-coded scale positions accelerate memorization and fretboard navigation.
MASTER EVERY SCALE WITH EASE - Practice pentatonic, diatonic, blues, and modes seamlessly across the fretboard.

The Ouriel Ouaknine Sliding Ruler is a lightweight, plastic guitar accessory designed in Canada to help guitarists of all levels master pentatonic, diatonic, blues scales, and modes. Featuring a compact sliding ruler format with bright color-coded scale positions, it offers an intuitive visual guide to the entire fretboard. With included instructions and a satisfaction buyback guarantee, it’s the perfect tool to accelerate your guitar practice and unlock new musical possibilities.

Reviews

M**D

Great product. Easy to learn. Easy to use. Easy to like.

15.02.2026

S**E

Recomendable y utilizable !

12.11.2025

M**K

Very compact, and useful.

21.12.2025

D**N

I have learned so much more than I thought was possible

20.03.2026

D**O

El producto llegó en el tiempo esperado, empacado en un sobre de papel y posteriormente en el sobre plástico de Amazon. Sin ningún problema. La regla plástica muestra las formas de la escala en el diapasón, y a medida que se mueve el cartón interno, transporta las notas de la escala. Es una herramienta muy práctica para ensayar, memorizar y estudiar. Un amigo la vio, y de inmediato me pidió el link para comprar la suya. La recomiendo para cualquier estudiante

7.08.2025

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1434214₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vietnam.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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ASIN	B07N31KPN5
Body Material	Plastic
Country Produced In	canada
Customer Reviews	4.5 4.5 out of 5 stars (741)
Date First Available	18 April 2019
Item Weight	80 g
Item model number	Ouriel Ouaknine
Material Type	Plastic
Product Dimensions	29 x 9 x 0.2 cm; 80 g

Ouriel Ouaknine Sliding Ruler - Magic tool for the practice of PENTATONIC, DIATONIC and MODE scales/Pentatonic Sliding Ruler for Guitar: The essential tool for ALL Guitarists

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Common Questions