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 3 of 7 1 2 3 4 5 6 7
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more scales

By Leo M Whitebird from Mpls Mnn
(Customer's Reviews) Monday, November 26, 2012

Works great, wish there was one for shorter scales (mando, tenor guit,etc)

Awesome tool!

By Thom Abell-String Theory Guitar Rep from Mount Juliet, TN
(Customer's Reviews) Sunday, November 25, 2012

I work in a large retail music store where the norm for guitar setup prior to my arrival was the "just throw a wrench on that guitar" (meaning adjust the truss rod) approach. Any guitar tech or luthier with half a brain knows that proper guitar setup is much more than a truss rod adjustment. These straightedges allow for an ultra precise view of your neck's relief or lack thereof. Sure, you can eyeball it, but WHY? I love being able to demo this tool while I'm checking out a customer's guitar. Customers are VERY interested in what it is and what it does. It really makes you look like a pro because pros use the right tool for the job and don't worry about looking like a know-it-all, eyeball it and hope for the best, Mr. Cool dude.....


By KazShop from Finland
(Customer's Reviews) Tuesday, August 28, 2012

Although pricey, this sturdy straightedge is excellent for all leveling & adjustment tasks of the neck for the rest of your life. The thickness and weight make it easy to make precise adjustments. The edges are sharp and will scratch your work easily so you may wish to give the corners a light sanding.

Notched Straightedge

By MakingMusick from Melbourne, Australia
(Customer's Reviews) Monday, August 20, 2012

My favourite tool for evaluating the fretboard and sometimes even the frets themselves.
A great tool, well worth the price!
Thanks StewMac :)

Notched Straightedge

By Gusty from Ro
(Customer's Reviews) Tuesday, July 10, 2012

Very precise, very qualitative. The price is quite expensive.


By DAB Custom Guitars from Pa
(Customer's Reviews) Saturday, June 23, 2012

Great tool, couldn't live without it. Never even looked at the advertised thickness, all I know is that its heavy duty and will last for years...Nuff said...

Frets or Neck ???

By Coffeeman from Lexington,Ky
(Customer's Reviews) Saturday, June 23, 2012

You can quickly tell where and what needs to be adjusted on the neck. The price is a little high but if you are able to determine your problem then it's probably worth it.

Quality & speed of delivery

By The Doc from Bromma, Sweden
(Customer's Reviews) Saturday, March 03, 2012

Firstly, the notched straightedge is perfection.
Secondly, this has got to be the fastest delivery of an internet purchase I have ever expierienced. I would go as far to say that ordering from StewMac is as fast as ordering in Sweden. BUT....there is nowhere in Sweden or the EU that has the quality of guitar tools that StewMac provide. What more is there to say, just by StewMac, in the long run there are no alternatives. Need less to say, this is not my first StewMac purchase and it won't be the last.
The Doc


By T Copley from Australia
(Customer's Reviews) Sunday, February 12, 2012

Does it's job perfectly, and is of excellent quality. Mine is 3.18mm thick but does not effect the job that this tool has to do at all, so I will not deduct stars for this.


By EdwardElias from Hendersonville, TN
(Customer's Reviews) Wednesday, January 18, 2012

Makes neck work a breeze!

Displaying 3 of 7
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Shown on page 16 of our latest catalog.