Notched Straight Edge for Guitar

Rated 4.75 out of 5 based on 4 customer ratings
(4 customer reviews)



A Notched Straight Edge is a recent invention and a welcome one, it helps the luthier or guitar repair person to see how flat the actual fretboard is rather than just the frets and this makes for a much more precise fret job.  At Crimson Guitars we don’t just sit back and replicate what is already being made, we improve!

One side is notched to fit over long scale Fender and Martin frets and the other to fit over most Gibson and PRS scale lengths 25″, 24.75″ and 25.5″.


  • length 474mm
  • width 39mm
  • thickness 5mm
All notched straight edges we have found for sale so far have simply been laser cut from steel or aluminium and are then sold, what most people don’t realise is that metal MOVES when parts of it are cut away and these other ‘straight edges’ can not be guaranteed. Our notched straight edges are precision cut from 5mm thick steel and then hand ground and lapped to a flatness of 0.01mm in a meter.  This is flatter in fact than most commercial straight edges and guaranteed with the Crimson Guitars seal of quality and durability.
All standard straight edges that are used in woodworking workshops all over the world have a bevel ground on the side, this reduces the surface that makes contact with your wood and gives you a much better chance of actually seeing any errors, NO notched straight edges other than ours offer the same feature.  We have hand ground both edges to give you the best chance of a straight neck and offer you what is simply the very best tool for the job, made in the UK by Crimson Guitars.
The notched straight edges are finished with a 2K automotive spattered satin finish. This is to give the tool a textured surface, reducing the risk of dropping the tool on a guitar. It allows you to see the gaps much more clearly and helps make your job that much easier.

Check out our YouTube channel for more videos on how to get the most out of your Crimson Guitars precision hand tools as well as a myriad of guitar building tutorials and demo videos.

We ship worldwide – no exceptions!


Additional information

Weight 0.8 kg

4 reviews for Notched Straight Edge for Guitar

  1. Rated 5 out of 5


    This came with the kit I bought and I figured i’d just put it on a hook and look at. No idea why I would need it, that is until I used it. Its a straight edge as far as you would need but its also notched. I can use it to check if my neck if flat before and after fretting. I can also still use it to check if my guitar body blank is perfectly flat. It has 2 scales on both sides. Its incredibly well made. Heavy, precise and gorgeous.

  2. Rated 5 out of 5

    David (verified owner)

    This is a bit of a luxury item for me but as I was struggling to level a fretboard fitted to a guitar by eye with a standard straight edge I took the plunge. The job was so much easier, just select the edge for your scale length, put it gently onto the fretboard, tweak the truss rod and job done, simple. In reality it was as easy as that, however one thing did strike me when using it and that was the weight, yes it is reassuringly heavy but if you happen to let it slip you could do some serious damage to your nicely finished fretboard, so care is needed as the corners of the notches are very sharp; a slight rub with a stone at the manufacturing stage just to take the sharp corner off would make an already excellent tool into something a bit special.

  3. Ben Crowe

    I’ll have a word with Tom and see what we can do about those edges.. thanks for the feedback and for your support! – Ben

  4. Rated 4 out of 5


    I bought a fret leveling kit, and this came with it.
    And in the famous words of Boris the Blade (say with heavy Russian accent): Heavy is good, heavy is reliable, and if it doens’t work, you can always hit ‘m with it!
    This thing is built to last

  5. Rated 5 out of 5

    ray.twyman (verified owner)

    Very good tool. A huge improvement over the one I made for myself 20 years ago and will make things much easier for me.

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