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 4 of 7 1 2 3 4 5 6 7
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Neck Work

By Grey Feather Guitars from Corpus Christi, TX
(Customer's Reviews) Wednesday, January 11, 2012

I have not had a chance to use this straight edge yet, but was already impressed at how heavy duty it was (1/8" thick.) I am sure it will hold up well, and see many years of shop use.

I love it!

By MoorMusic from Switzerland
(Customer's Reviews) Wednesday, December 28, 2011

I have been doing guitar setups for years without this tool. Now that I have it, I don't wanna work without it anymore. I use it everyday to check the neck on guitars and for setups. No more guessing, no more looking along the neck and still not being sure.

Real Answers

By Rob's Mod Shop from Holland, MI
(Customer's Reviews) Friday, December 23, 2011

I finally broke down and bought one of these. I'm working on a problematic bass neck so I started with that one. I love it. The one for guitar is on my short list. It really does take all the guess work out of reading a neck and gives me a clear picture of what I'm working with. This thing is a good chunk of metal that will last a lifetime. BTW, the difference between 3.25mm and 3.56mm is roughly .012" (which is about 3 pieces of printer paper). That's well within the tolerances most manufacturers work with, especially on a non critical dimension, and the "thickness lie" mentioned is a non issue.

The Thickness is only 3.25mm,not like the mentioned 3.56mm

By Riocky from Nanning,China
(Customer's Reviews) Thursday, December 01, 2011

Disappointed about the ôthickness lieö

Another great tool from Stew Mac

By A&Z Guitar Repair from Eolia, MO
(Customer's Reviews) Wednesday, November 16, 2011

Straight edge really works well for pinpointing problem areas on a neck. There's always the "sight the neck" technique, but this really allows the user to see where the problem(s) are. The edges are sharp so be careful when using around instruments.

Peace of mind

By Jeff deVries from Arnprior, Ontario Canada
(Customer's Reviews) Friday, November 11, 2011

Having these straight edges really gives me peace of mind. I don't have to worry about if I'm leveling frets on a flat neck or not or if my set is accurate. I use these tools frequently.


By drinkbarmits from Tokyo, JAPAN
(Customer's Reviews) Sunday, October 23, 2011

Very smooth surface, edges are very sharp,
good weight and thickness.

Must have this tool even you're guitar player.
to know your own instrument, to great play.

This is valuable tool.

Very nice!

By wileyj59 from Rochester, NY
(Customer's Reviews) Wednesday, September 07, 2011

Great quality tool to add to the tool box. Makes fret work and set up easy.

Great for a true reading of the neck.

By Middleton Guitars from Southern California
(Customer's Reviews) Tuesday, August 30, 2011

I have both sizes to cover both instruments. They are handy for understanding where the wood of the fingerboard is vs the fret-heights. Makes for better decisions on fretwork.

This tool could also be used to read the tops of the frets if you are on a budget and could only buy 1 tool.

My only complaint is that I have run into a few guitars that had a scale-length that didn't fit any of the tools.

Notched Straightedge

By JTM Musical Repairs from Marion, IL
(Customer's Reviews) Tuesday, July 19, 2011

I use this tool in my repair shop every day. I could not imagine not having this tool.

Displaying 4 of 7
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Shown on page 16 of our latest catalog.