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String Action Gauge

5.0
  • 291 Reviews
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Inches

Item # 0670
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$19.90

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Metric

Item # 0670-M
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$19.90

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String Action Gauge

About This Item

Fast, accurate measurements for setups.
Our String Action Gauge is a "Swiss Army Ruler" for setup adjustments on any stringed instrument.

This pocket-size stainless steel rule has become a luthier's favorite in busy shops. It's the best way yet to get vital measurements on acoustic and electric instruments.
• String height
• Bridge saddle height
• Saddle slot depth
• Fret slot depth (unbound fingerboards)
• Nut height
• Pickup polepiece height


No more "three-and-a-half-64ths or 3/32" plus one of those little lines." This gauge measures in ways that regular rulers can't.
—Dan Erlewine

Developed here at Stewart-MacDonald by Dan Erlewine and Don MacRostie, the gauge features a progressive string height scale: simply slide it across the frets and read the measurement under the string. It's faster to use than any ruler, and stays parallel to the fingerboard—much easier than trying to hold a ruler perpendicular to a rounded fret.

StewMac's String Action Gauge has two models (sold separately) for measuring in inches or millimeters. The string height markers are graduated from .010" to .140" on the inch model, and from 0.25mm to 3.50mm on the metric version.

The back of the gauge has a time-saving fractional/decimal/metric conversion chart.

The String Action Gauge is made of durable stainless steel with precision-etched markings, and fits right in your pocket.

Tip: You can use the gauge to set router depth, instead of a shop ruler. It sits solidly on your router base, with the scale right where you need it.


Video

Instructions

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 Action Gauge

How to determine string action with the String Action Gauge.

Metric String Action Gauge

How to determine string action with the Metric String Action Gauge.

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5.0
  • 4.88 average rating from 291 reviews
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Displaying 1 of 30
5.0

Must have for any shop or home luthier

By

Verified Buyer


As a semi-professional luthier and guitar player in general I find myself using this tool extremely often and would highly recommend to anyone looking for the same precision. Just what I expected from StewMac, a top notch high quality product with easy to read precision!

5.0

Outstanding tool!

By

Verified Buyer


This is a must for anyone to do proper setups. Highly recommend.

5.0

Fantastic well built tool!

By

Verified Buyer


I previously bought the Imperial system of units string action gauge (which I still own!) And loved it, but I mainly use metric for most things. Even with the previous gauge, I constantly made conversions from inches to centimetres and it was just easier to buy the metric string action gauge and life is much smoother setting up guitars and basses. Both are sturdy, well built, fantastic products that make a great addition to the workshop!

5.0

Great tool

By

Verified Buyer


I used a 6" machinist's rule for years, but this is machined better & saves time being able to lie directly across multiple frets. The house goes through some seasonal climate changes & this is a handy check to some of those symptoms for someone as finicky as I am about setups.

5.0

I use this a LOT!

By

Verified Buyer


No machinist rule can do this...
Excellent for setting up my guitars...
Gets a ton of use...
Will never go back to the rules, this thing is wonderful!

5.0

Great product

By

Verified Buyer


I recommend.

5.0

Great tool

By

Verified Buyer


I use this tool a lot. It's handy and easy to read. I bought the metric and standard versions.

5.0

Easy to read

By

Verified Buyer


Used the String Action Gauge while lowing the action on my GS Mini, Tylor guitar. Made me look like I knew what I was doing!

Action is lowered, guitar plays and sounds great.

5.0

Invaluable tool

By

Verified Buyer


I am just beginning to know how to adjust the neck of my acoustic guitar and this is one of the most important tools to start out with.

5.0

Nice Guage

By

Verified Buyer


Nice tool...Wish it had metric on the other side...

Displaying 1 of 30


StewMac PDF Catalog, page 16 See String Action Gauge
on page 16 of our StewMac Digital Catalog