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Home : Tools : Straightedges : String Spacing Rule

String Spacing Rule

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

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String Spacing Rule

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0673 String Spacing Rule Yes

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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.

Using the String Spacing Rule for guitars and mandolins
Getting the best string spacing on guitars, mandolins... everything!
Using the String Spacing Rule for guitars and mandolins Read more

In this issue:
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.

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 Ratings and reviews
String Spacing Rule
String Spacing Rule
5 out of 5 stars
Based on 126 ratings Write a Review
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Displaying 81 – 90 < 1  ...  8  9  10  ...  13 >
5 8-04-2011
Happy Camper

This product is, as always from StewMac, great quality. But I am always impressed most by their speedy service.

gr82cucuz  Pahrump, Nevada
5 8-01-2011
mr fix it .

hi ,i thought the string spacing rule was great done the job ,and well worth the price ,

derek from england  england Read my reviews (2)
5 8-01-2011
Must have

The first thing any guitar tech should buy before starting out. Wonderful product. Ruler very flexible so good for marking lines on curves too.

Chucka  Melbourne, Australia Read my reviews (8)
5 7-25-2011
string spacing ruler

Awesome. Easily figure nut slot spacing. Works like a charm. Worth the money to save the time and headache of trying to 'eyeball' it

Spooky Dave  Michigan Read my reviews (3)
5 7-05-2011

Great little gadget for setting custom string spacing.

desmatic  Wales, United Kingdom Read my reviews (11)
3 7-05-2011
Hard to read but useful

Hard to read, making it somewhat frustrating to use. However, string spacing turns out great when using this rule.

MidnightGuitarRepair  Rochester NY Read my reviews (4)
5 6-23-2011
Super handy

AS i generally make one off instruments so no two necks are exactly alike, this rule is great and saves a lot of time and frustration.

flatfootjohnny  London Read my reviews (2)
Customer supplied image for review
5 6-09-2011
Better than playing with your nuts

This thing is that good. I hand carve 1 to 3 nuts everyday for our guitar/bass producion and this layout ruler makes the job so much easier and accurate. About 20 or so years ago, bass player marked me down on a review, for the uneven spacing (compensated for graduated string width). So we have been doing this for quite a while. It was nice to have an off the shelf version available. I have worn out a few and am sure to need more in the future. Bass player is doing a new review, I hope they now understand the compensated nut spacing.

Keith Roscoe  Greensboro, N.C. USA Read my reviews (8)
5 6-08-2011
String Spacing Rule rules

I used the string spacing rule on my first homebuilt F-5 mandolin which had a nut .090 wider than the normal 1"-1/16. I've never been able to lay-out string slots so perfect until now. I am a toolmaker by trade and strive to get things perfect. This tool makes it easy to do work like a pro. Thank You Stew-Mac

Phillip B. Gifford  Lebanon, Ohio USA Read my reviews (3)
5 6-02-2011
What an incredible time saver

Need I say more. So much easier than doing a manual layout. Quick and easy.

Skee  Pittsburgh, PA Read my reviews (2)
Displaying 81 – 90 < 1  ...  8  9  10  ...  13 > /\ Top of Reviews

Shown on page 18 of our latest catalog.
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