Feeler Gauges

  • 10 Reviews
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A set of 6" x 1/2" steel gauges that allow precision filing of nut slot depths.

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Feeler Gauges

Item # 1811
In stock, ready to ship!


Total: $0.00
Quantity: 20


A set of 6" x 1/2" steel gauges that allow precision filing of nut slot depths.

Simply stack the appropriate gauges on the fingerboard, against the front edge of the string nut, and file the nut slot down to the top of the stack.

These gauges are also useful for checking string-to-fret clearances and fret slot width, for hardware installation work, and for setting up shop tools.

Gauges include .016", .018", .020", .022", .024", .026", .028", .030", .032", .034" and .040" thicknesses.

The Feeler Gauges are included in the Essential Nut Making Tool Kit, which has all the basic tools you'll need for shaping, string-spacing, slotting and fitting string nuts like a pro.

Product Instructions

Making a Nut, Step-by-Step

Dan Erlewine, of Stewart-MacDonald's R&D Team, walks you through making and installing a new nut.

Product Instructions

Using Feeler Gauges to Control Nut Slot Depth

How to use feeler gauges to control nut slot depth.

Ratings & Reviews

Feeler Gauges

  • Based on 10 Reviews
Write a review

Needs smaller sizes

By StephenA from NJ
(Customer's Reviews) Thursday, July 18, 2013

Well made and useful, but needs to have smaller sizes so it can be used to measure neck relief and action.

Great Tool

By Adams Guitars from Wisconsin
(Customer's Reviews) Thursday, January 03, 2013

i wish I purchased these years ago. They make nut work much easier!

Feeler gauges

(Customer's Reviews) Thursday, December 06, 2012

Very good and useful tool,but some (gauges under 0.016 should be welcom .(action ,relief measuring too)

Essential Tool!

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

Quality feeler gauge.

high quality gauges

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

Not much to say. They are well made and everything you would expect from StewMac.


By Not Square from Mountain View, CA
(Customer's Reviews) Sunday, March 13, 2011

If only the sizes got small enough to check action and relief this would be perfect.


By Steve R from Spring,Tx
(Customer's Reviews) Saturday, January 29, 2011

Absolutely the best,perfect intonation achieved, and no more buzzing cause I cut too deep! Thanks

Feeler Gauges 

By Beat St++ssi from Baar, Switzerland
(Customer's Reviews) Sunday, October 17, 2010

Its e good Tool!!!

Great quality, wish there were more sizes available

By James Finnerty from ROCKville, MD
(Customer's Reviews) Wednesday, September 15, 2010

This set of feeler gauges is very well made and should last forever. The sizes are clearly marked.

I do wish there were smaller sizes available. I had to order an automotive set from another dealer because I like my relief to be around .010 and these just don't do down that far.

Mandatory Item for Many Applications

By Amplikat from Fresno, CA
(Customer's Reviews) Wednesday, September 01, 2010

This is a required adjunct to a 6" steel rule with 1/64th spacing increments. It's a "must-have" for so many contexts.

Shown on page 7 of our latest catalog.