Notched Straightedge

  • 66 Reviews
  • Write a review

Read the fretboard instead of the frets. Developed in our shop, the notched straightedge has become a standard for evaluating fretboards.

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For guitars

Item # 3814
In stock, ready to ship!



For basses

Item # 3813
In stock, ready to ship!



For short scale basses and baritone guitars

Item # 3812
In stock, ready to ship!


Total: $0.00
Quantity: 20


Notched straightedge for guitar or bass

Dan Erlewine demos the notched straightedge from StewMac. This tool lets you check a guitar or bass neck for straightness, with or without the frets in place.

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Read the fretboard instead of the frets. Developed in our shop, the notched straightedge has become a standard for evaluating fretboards.

The notches fit right over the frets so you can check the straightness of the fretboard itself, without the interference of worn or badly-seated frets.

Made of machined stainless steel, satin-finished for easy marking with a pencil (cleans off easily).

#3814 For guitars
One edge is notched for Gibson "long scale", plus Fender and Martin fretboards. The other edge fits Gibson's 24-3/4" scale, plus 25" Paul Reed Smith and Dobro® Scale.

Length 16-1/2" (420mm)
Width 1-1/2" (38mm)
Thickness .130" (3.25mm)

#3813 For basses
One edge is for Fender 34" scale; the other edge for 35" scale.
Length 22-5/8" (575mm)
Width 1-1/2" (38mm)
Thickness .130" (3.25mm)

#3812 For short scale basses and baritone guitars
One edge fits Fender Bajo Sexto 30.2" scale, Gibson EB 30.5" scale, plus Fender 30" short-scale bass and Danelectro 30" baritone scale. The other edge fits Fender's Baritone Custom Jaguar 28.5" scale, Eastwood's 28" scale and custom baritone scales falling between 28" and 28.5".
Length 19" (482.6mm)
Width 1-1/2" (38mm)
Thickness .130" (3.25mm)

Ratings & Reviews

Notched Straightedge

  • Based on 66 Reviews
Displaying 2 of 7 1 2 3 4 5 6 7
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It's perfect!

By geetar_geek79 from North Hollywood, CA
(Customer's Reviews) Monday, October 14, 2013

It worked for someone who just did his first setup/leveling... ME!!!

Perfect Solution

By Michael T from UK
(Customer's Reviews) Saturday, October 05, 2013

It's surprisingly difficult to establish the straightness of the fingerboard, once fretted, UNLESS you have one of these. Tells you what the root cause of neck warp is, so that you can apply the right correction. If the board is flat, then the frets need work. If the board isn't, then you need to figure out a strategy for getting it flat. Dressing the frets alone probably isn't going to solve the underlying problem. This tool is an invaluable solution to a tricky problem.

A few suggestions...

By AndrewD from Orillia, Ontario, Canada
(Customer's Reviews) Friday, September 13, 2013

A very useful tool for obvious reasons, mines seen plenty of use. However, it would be nice to have one that ends before the neck to body joint on acoustics to eliminate tongue rise or fall from neck evaluation. Also i can imagine a need for a notched straightedge for mandolins, etc..

Get Straight!

By Mikaleno from Los Angeles, CA
(Customer's Reviews) Tuesday, August 06, 2013

Got the Bass one too! Wham-Bam, get the board straight then start finding high/low frets with the Rocker. But you better keep both hands on this thing with a good grip. If you slip this thing will ding a guitar big time.... You been warned....!

Worth every penny

By WAR from Austin, TX
(Customer's Reviews) Thursday, July 18, 2013

The notched straight edge paid for itself the first day I had it. I had one guitar that had tuning, action and intonation issues. Using the notched straight edge I was easily able to straighten the massive relief in the neck and after a string height adjustment to reset the action, I was able to perfectly set the intonation which has been an issue for this particular guitar for years. Perfect!


By T Jones from Chester, MT
(Customer's Reviews) Thursday, June 27, 2013

Pricey but the best tool for fret level prep. Must have for serious techs or builders..

Expensive Yet Important Item!

By Rockin' Mike Burton from Canada
(Customer's Reviews) Saturday, April 13, 2013

This is excellent when you want to check the relief of a neck that has very uneven frets! By reading the board instead of the fret tops, you are eliminating a lot of guess work! Too bad its soooo pricey!

Buy this tool

By Vinsaniity from Frederick,md
(Customer's Reviews) Saturday, March 23, 2013

If you have more that one guitar, this pays for itself instantly! Quality and easy to use. Must have for any guitar player.

Good tool and good value

By Tim Skau from Norway
(Customer's Reviews) Tuesday, February 26, 2013

I was a bit reluctant on buying this because I was unsure if I would really need it. But when doing fretwork like refretting and fret leveling, and to ensure the neck is straight, this tool is really worth it. I have the one for bass and guitar, and could not be without them now. The price is a bit high though, so that is why I do not give it a rating of 5 stars.

Great tool

By Tom Sawyer (really!) from Vernon, CT
(Customer's Reviews) Sunday, January 20, 2013

Allows me to read the fingerboard properly and avoid guesswork. Excellent quality but if you're a guitar instructor as well as repair your fingers! The edges are precision machined and can be a bit spiteful if handled with anything less than caution.

Displaying 2 of 7
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Shown on page 16 of our latest catalog.