Precision Straightedges

  • 33 Reviews
  • Write a review

For accurate fretting and neck evaluation. Super accurate straightedges for precise fretting and neck work.

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Precision Straightedges 12" length

12" length

Item # 3849
In stock, ready to ship!


Precision Straightedges 18" length

18" length

Item # 3850
In stock, ready to ship!


Precision Straightedges 24" length

24" length

Item # 3799
In stock, ready to ship!


Precision Straightedges 36" length

36" length

Item # 3800
In stock, ready to ship!


Total: $0.00
Quantity: 20


For accurate fretting and neck evaluation. Super accurate straightedges for precise fretting and neck work.

Our straightedges are made specifically for checking neck straightness and relief, evaluating truss rod adjustments, and pinpointing high or low frets. Four versatile lengths are available for working on any fretted instrument, from mandolins to guitars to basses.

The narrow beveled edge allows easy and accurate viewing of the gap between the edge and the surface being checked. Made of durable stainless steel with a satin finish for easy marking with a pencil, each straightedge is precision-machined for accuracy to ±.0015" per foot.

These straightedges are also ideal for laying out projects on wood or paper, and for setting up table saws, jointers and other shop equipment.

#3850 18" Precision Straightedge is part of our Basic Setup Kit.

For acoustic guitars, our Neck Set Gauge is designed to attach to the #3799 24" Precision Straightedge.

Ratings & Reviews

Precision Straightedges

  • Based on 33 Reviews
Displaying 3 of 4 1 2 3 4
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This is an Essential Tool

By M Dawes from South Shields, England
(Customer's Reviews) Saturday, March 10, 2012

This straight edge is an essential tool for anybody who wants to seriously set up guitars, I have used the capo and holding the string at the last fret method for years, but this tool really took me by surprise, as is shows up all the problems with a neck that the old string method will not. With this tool and the nut slotting tool you can cut the time down that you can spend trying so suss out what the problems are with a neck, this is definitely one of my essential tools, another quality tool from Stewmac.


By Steeve Rock from L+¬vis, Qu+¬bec, Canada
(Customer's Reviews) Tuesday, March 06, 2012

Straigh as they were made! great and acurate tool

Nice but thin

By Watson Guitars from Lakeville, MN
(Customer's Reviews) Monday, January 23, 2012

I have the 36" length it nice and strait but bends without much pressure

Straightedge rules !!!

By neilfan from Glenview, IL
(Customer's Reviews) Wednesday, December 14, 2011

Recently received the 18" Straightedge... worked my way through the acoustics, electrics, 12 strings & basses... big improvement and flat necks 'rule' !!! This Gretsch also improved with roller bridge from Stew-Mac...

great tool

By Set-up Technician from Solon,Ohio
(Customer's Reviews) Sunday, November 06, 2011

Beveled edge allows for easier viewing.


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

I have several lengths for setting up guitars and bass. They are well made.

Invaluable Tool

By Clell from Dallas, TX
(Customer's Reviews) Saturday, May 07, 2011

I use this straight edge daily for just about everything from set up, building and dialing in tools. Very accurate

As good as expected

By Alfredo Rocha from Mexico City, Mexico
(Customer's Reviews) Tuesday, April 19, 2011

Good replacement for the old one, as good as expected and a helpful bevel

Not Great but Not Bad

By Billy-Z-Titan from Chico,CA
(Customer's Reviews) Friday, April 01, 2011

This does pretty good for checking the neck and leveling frets, But I think I should have got the notched leveler. Mainly because you really can do neck, fret, and the fingerboard as well.

Fine tool

By Cagey from Clinton Twp., MI
(Customer's Reviews) Thursday, March 24, 2011

This 18" straightedge is a fine tool, well-made, and suitable to task. The only thing I'd change if I could would be to put dimension marks on it.

Displaying 3 of 4
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Shown on page 16 of our latest catalog.