Sliding Ruler for Guitar



  • 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!

853 in stock (can be backordered)



The Sliding Ruler for Guitar is an essential tool designed to enhance your guitar practice. Whether you’re a beginner or an advanced guitarist, this innovative device provides a comprehensive solution for mastering scales and improving your fretboard knowledge.

Key Features:

  1. All-in-One Scale Practice: The Sliding Ruler covers PENTATONIC, DIATONIC, and MODE scales. It’s like having the entire fretboard at your fingertips! No matter your skill level, this tool helps you practice scales effectively.
  2. Colorful Scale Shapes: The five positions of pentatonic scales are presented in vivid colors. This visual aid makes it easy to memorize the shapes and understand their relationships. You’ll quickly learn to navigate the fretboard with confidence.
  3. For Beginners: Learn your first pentatonic scale in no time! Impress yourself and your friends by playing confidently using this tool.
  4. For Advanced Guitarists:
    • Explore Scales: Practice pentatonic, blues, diatonic scales, and the seven modes in any key.
    • Chord Combinations: Discover new chord combinations by clearly visualizing scale degrees across the fretboard.
  5. Warranty: We’re confident you’ll love the Sliding Ruler. If you’re not satisfied, we’ll reimburse you—no questions asked!

Technical Details:

  • Dimensions: 29 x 9 x 0.2 cm
  • Weight: 80 g
  • Manufacturer: Ouriel Ouaknine
  • Country of Production: Canada

Get Yours Today: The Sliding Ruler for Guitar is available on It’s the perfect gift for guitarists of all levels! 🎸🔥

!Sliding Ruler for Guitar

Note: Optional off-scale notes are also marked on the ruler, allowing you to explore beyond the basic shapes.1

For a detailed video presentation, check out this Facebook video. 🎥🎶

Remember, the Sliding Ruler is more than just a tool—it’s your gateway to mastering the fretboard and unlocking new musical possibilities! 🎵✨

Additional information

Weight .064 kg
Dimensions 29 × 9 × 0.2 cm

Sliding Rulers for Guitar (SRG)

9 reviews for Sliding Ruler for Guitar

  1. (verified owner)

    Excellent, A++ learning tool for pentatonic scales, diatonic and minor scales, blues scales, and all seven modes. If you learn these five shapes backward and forward and inside-out (each shape is a different color on the slide rule), you will be the master of your fretboard. I bought it primarily to help me unravel the Mystery of the Modes — I’ve tried several different ways to do this, but none of them are as visual, clear, and simple as this slide rule.

  2. (verified owner)

    Is it worth thirty bucks? For me, absolutely yes. I’ve spent more than that on flash cards and posters, and none of them have helped me half as much as this slide rule. Yes, it’s $30 for paper and plastic — but you’re paying for the careful thought and planning that went into the layout and design of this very useful teaching tool.

  3. (verified owner)

    Customer service is also superb. I received a defective ruler (a couple of the cutout windows were missing). I contacted them, they said they had a defective run, and would send me a new one as soon as it was available. Took a couple weeks, but it got here, as promised. Well done!

  4. (verified owner)

    This slide ruler has lots of info and seems durable enough. Print is a little small but this ruler is meant to be compact in size

  5. (verified owner)

    It takes a while to really get comfortable with this. You should read the documentation before diving in. Once you get it, it’s a good practice tool

  6. (verified owner)

    The tool was really well packaged, probably the nicest I’ve seen in a while. The quality of the sliding rule is really good, honestly it will have me looking at other items from the same company. Very nice attention to detail on the one I received. The instructions that came with it are also very clear and easy to understand. Zero complaints

  7. (verified owner)

    I have been playing the guitar for a little over a year. I could see that there were patterns and that knowing them would be helpful. I have a hard time with theory and scales and hope that this slide rule will help me. I read the directions carefully and found them helpful up to where it got into the caged and modes. I’ll revisit that later. I liked all the detail and practice suggestions The directions use the example of it in A minor which is with the slide rule all closed up with no directions for which way to slide it. After fiddling around, I found that sliding the inner part to the right to put the desired note in a square box worked. I am confident that this is a useful tool and have no regrets about the purchase. It came through the mail via Canadian post and was days early.

  8. (verified owner)

    This slider ruler product deserves a standing ovation. I’m an ex-guitarist from decades past and am relearning the fundamentals of music theory and finger work through the pentatonic major and minor scales, modes, notes, and fretboard. This ruler shows in vivid Technicolor detail the scale shapes and notes, making them easy to understand, learn, and transpose to every key. Running through the scales both individually and linked to each other up and down the neck is now a blast. Also marked are optional off-scale notes that can add to the basic shapes. The ruler should last for years, is high-quality, very portable, a dream to read, logical, durable, and comes with an excellent operation and example sheet that explains and enhances the operation with diagrams and best practices recommendations. The email product support is excellent, too. Well worth the money, highly recommended. And very cool.

  9. (verified owner)

    I was pleasantly surprised by how effective this little tool is. It is borderline ingenious. I just started playing guitar a few months ago. However, I have a solid understanding of music theory from playing piano for years. I think this tool is best for someone with foundational knowledge in music theory. I think understanding these concepts at a baseline will make the tool more useful:

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