String Spacing Rule

  • 122 Reviews
  • Write a review

Get accurate string spacing without calipers, calculators or shop rulers.

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String Spacing Rule

Item # 0673
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Quantity: 20


String Spacing Rule

Dan Erlewine shows how to use the String Spacing Rule to quickly locate the strings on a guitar nut. He also explains the problem with using equal spacing.

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Get accurate string spacing without calipers, calculators or shop rulers.

Our laser-etched stainless steel String Spacing Rule quickly finds the right spacing for just about any stringed instrument. It does all the math for you: proportional slot spacing automatically compensates for string diameters, from treble to bass, so the thicker strings won't seem crowded to the player.

The problem is: if you space the strings equally, they don't feel equally spaced. The thicker bass strings seem crowded together. Each gap between strings has to be slightly different to feel right to the player. How do you calculate this? The String Spacing Rule takes care of it, for guitars, basses, mandolins, and banjos.

Fast. The String Spacing Rule is slotted so you can quickly mark the string positions onto the nut. Use a scribe instead of a pencil, and it creates extremely accurate starter grooves for your nut slotting files.

Easy to use. Mark the two outer string positions onto the nut. Slide the rule over the nut to find a set of slots that matches your two marks. Now just scribe or pencil the string positions onto the nut! No measuring, dividing or calculating — the rule does the math for you.

Accurate. The rule's slots are laser-cut in a continuous scale that wraps around both edges of the rule (our thanks to luthier Kevin Ryan for creating this tool). Proportional slot spacing subtly compensates for the diameters of the individual strings, from treble to bass, to give the right feel and playability.

Not just for nut slotting. You can use the String Spacing Rule to notch Tune-o-matic bridge saddles, to lay out bridge pin holes, and when notching archtop guitar, banjo, mandolin and violin bridges.

The String Spacing Rule is made of laser-etched flexible stainless steel that conforms to flat or arched surfaces. Instructions are included.

The String Spacing Rule is 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.

Trade Secrets! Newsletter

Using the String Spacing Rule for guitars and mandolins

Erick Coleman uses Kevin Ryan's proportional string spacing rule for more jobs than Kevin ever expected: 12-strings, mandolins, bridge saddles... Plus: an explanation of the difference between equal spacing and proportional spacing.

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

String Spacing Rule Instructions

The String Spacing Rule locates string positions so that heavier strings get the wider spacing they need.

Ratings & Reviews

String Spacing Rule

  • Based on 122 Reviews
Displaying 4 of 13 1 2 3 4 5 6 7 8 9 10 11 12 13
Write a review


By Chuck M. from Bruce, Mississippi
(Customer's Reviews) Tuesday, March 26, 2013

This thing is a must have! Can create whatever string spacing you or your customer wants. Highly recomend for anyone making a new nut for guitar!

Great tool

By Kroeber from Japan
(Customer's Reviews) Monday, February 11, 2013

This is an indispensable tool which makes nut making a lot easier. A must-have tool.

String Spacing Rule

By benderb9 from St Petersburg,FL
(Customer's Reviews) Monday, January 28, 2013

This is one of those tools that you wonder why you'd waited so long to purchase it. Fear no string spacing when using this tool. Fast, easy to use and understand and the 5 star results make it darn near indespensible. If lost or damaged I'd replace it.

String S/Rule & Saws

By Trevor A. from New Zealand
(Customer's Reviews) Tuesday, January 08, 2013

Hi there, I received the above order within 6 days, all in perfect condition. Great service thank you.

good, but expensive

By J.B. from Germany
(Customer's Reviews) Friday, December 28, 2012

easy to use, nice to have

A must have tool !

By Guitar Groomer from West Hills CA
(Customer's Reviews) Wednesday, November 14, 2012

i use it in my shop all the time!

Best way to do this.

By Reid Hall from New York City
(Customer's Reviews) Tuesday, November 13, 2012

It makes it so easy. What else can you say.

string scale

(Customer's Reviews) Friday, November 09, 2012

All I can say is this thing works.A must have if you are a builder

Very Clever

By Arthur Jackson from USA
(Customer's Reviews) Sunday, October 28, 2012

This is a fantastic tool; simple and easy to use. Much better than dividers and math and callipers. All that silliness is done for you. Put it on your Christmas list you need it!

Makin life easy

By Derwyn from Alberta. Canada
(Customer's Reviews) Tuesday, October 23, 2012

Used the string spacing rule for all nuts that i've made. It sure makes getting the string spacing right easy. Excellent product!

Displaying 4 of 13
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