Nut Slotting Gauge

  • 65 Reviews
  • Write a review

A revolution in guitar setup! Precisely measures string heights, so you can cut accurate nut slots for consistent playability.

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Nut Slotting Gauge For guitar and most instruments

For guitar and most instruments

Item # 2003
In stock, ready to ship!


Nut Slotting Gauge For bass

For bass

Item # 2006
In stock, ready to ship!


Total: $0.00
Quantity: 20


Nut Slotting Gauge

Dan Erlewine uses the Nut Slotting Gauge: the most accurate measure of nut slot depth.

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A revolution in guitar setup! Precisely measures string heights, so you can cut accurate nut slots for consistent playability.

This device that will revolutionize the way you set up a guitar.
The Nut Slotting Gauge quickly and precisely measures string heights over the first fret. When filing nut slot depths, you see your results more accurately than ever before. No more guesswork or "eyeballing" the string heights, and no more searching for elusive combinations of feeler gauges. You can custom-tailor the playability with consistent, repeatable results.

At last! A precision tool for establishing string heights!

The Nut Slotting Gauge was designed by Don MacRostie here in our R & D shop. It features an easy to read dial indicator with adjustable zero point, and it's super accurate to .001". The machined brass base fits over the strings to rest on the fingerboard, and it works with most acoustic and electric guitars, mandolins and banjos. A larger brass base is machined to fit bass string spacings. Both have gently arched bottoms to follow most any fretboard radius. Instructions are included.

The Nut Slotting Gauge is included in this money-saving set: Nut Slotting Gauge and Neck Relief Gauge Set

Trade Secrets! Newsletter

Putting the new Nut Slotting Gauge to work on a "burn victim" guitar

Dan Erlewine shows a before and after of a 1958 Gibson that's (barely) survived a house fire. It needs a new nut, and he's using the Nut Slotting Gauge to get it right the first time.

Product Instructions

Nut Slotting Gauge Instructions

How to determine nut slot depth with the Nut Slotting Gauge.

Ratings & Reviews

Nut Slotting Gauge

  • Based on 65 Reviews
Displaying 5 of 7 1 2 3 4 5 6 7
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* An Indispensable Tool *

By M Dawes from South Shields, England
(Customer's Reviews) Sunday, January 22, 2012

This was one of these tools that I read most of the reviews first as I usually do, but to be frank the reviews put me off a bit, but after struggling on putting a new Earvana nut on my 1973 strat and cutting the string slots to the right depth using the old feeler gauge method. I decided to order the Nut Slotting Gauge, I must say that most of the fears that I had from reading the reviews have disappeared, as I found using the gauge is so much easier than using the old feeler gauge method and it is far quicker too.

Yes I do agree with some of the reviews to a point, you do have to re-check and be careful, but I tend to think that this is due more to the nature of the neck radius that you are using the gauge on. I myself found that when using it to check my strat with a steep 7-1/4 radius fret board there was a little variation in the readings, but I found this mostly to do with the actual position of the gauge as it was too easy to allow the gauge to be measuring one side of the measuring tip and not in the middle. Once I ensured that the tip was centred on the string and the gauge block was sitting square, I found that I obtained very accurate repetitive readings, so much so that I decided to further re-cut the nut slots in the Earvana nut.

I completely re-cut all the slots in the nut far more accurately than using the old method. There is one thing for sure, this is a tool I will use extensively for nut slotting it is extremely accurate and it is now a tool I cannot do without, highly recommended.

Nut Slotting Gauge

By jackguitars from Sicklerville,NJ
(Customer's Reviews) Sunday, January 08, 2012

i Love this tool. i check all the heights with all of my 300 guitar's. i love all the tools i get from stew mac. it's really nice to show my friends this item. you can compare. easy to used. lol would be nice to have a build in file to cut nuts. life getting to easy. jack Sicklerville,NJ

Great Tool!

By Wilmer Gingerich from Jamesport MO
(Customer's Reviews) Saturday, December 17, 2011

Wow! What can I say? Ingenious device! Makes filing the string slots at the nut completely fool proof!!

excellent tool!

By guitarmanpercy from Canada
(Customer's Reviews) Wednesday, December 07, 2011

The nut slotting guage is well worth it. It takes the guessing out of how deep to cut the slots and is far more accurate than feeler guages. Worked wonders for me.

This is an absolute must

By dsteiner from Mechanicsburg, PA
(Customer's Reviews) Wednesday, November 09, 2011

If you are eyeballing your work and are happy with the results, think again. You will be amazed at the level of perfection you can achieve with this gauge. From building nuts to setting the relief in the neck to setting string height it is amazingly accurate. I can't think of a job I have done where I didn't use this gauge. For some reason the first one I received was broken. I sent it back and received another broken one?? I almost gave up on it but decided to have it replaced with another one. I'm glad I did. it is just so accurate!

A little confused.

By Eggy from Pembroke, Va
(Customer's Reviews) Monday, October 17, 2011

Being left-handed and thinking as such, I would have thought that the readings would go from 0 to 100. That would of made sense to me. Instead, it goes from 100 to 0. Also, trying to zero this thing seems harder than it does in your video. After every measurement, I would have to reset back to zero. Taking 3 readings and then averaging them together seems not quite as accurate has reading down to 1/1,000 of an inch. Perhaps, instructions that are more articulate. Keep on Trucken

Must have for pro work.

By Gabriel's Guitar Repair from Dallas, TX
(Customer's Reviews) Friday, October 07, 2011

This tool is great, I almost do not want to recommend it, because it gives me a leg up on the competition. I can copy action heights and not guess when I do setup work. Quality product that will last a life time. I wish base for bass was sold separate from the gauge.

very handy dial indicator

By jerry banfield from chatham,il
(Customer's Reviews) Saturday, July 09, 2011

This is a well designed indicator, and is a great tool for accurate setups. Someone engaged their brain wisely when they designed this one.

Brilliant, accurate tool!

By John H from Southeast PA
(Customer's Reviews) Saturday, May 21, 2011

Not only did it work great for filing a new nut, but I found it works great for measuring string height at the 12th fret for action adjustment. I'm picky about getting the last few thousandths of an inch possible in lowering my action, so the gauge works great for logging slight changes to my set up.

Fast and accurate height setting

By Kevin Swaim from Heyworth, Illinois
(Customer's Reviews) Wednesday, April 27, 2011

This tool is great, it gives you ultra precise string height. If you just want to be accurate, it does that, but it also is so fast to use! If you do work at all for pay, this tool will make back it's money in no time!

Displaying 5 of 7
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