String Action Gauge

String Action Gauge

Inches

Item # 0670
In stock, ready to ship!

$21.74

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Metric

Item # 0670-M
In stock, ready to ship!

$21.74

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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 355 reviews
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5.0

Excellent action measuring tool

By

Verified Buyer


This is a great tool to use to measure the action of your guitar. Highly recommended!

5.0

handy tool

By

Verified Buyer


every tool box needs this tool

4.0

String Action Gauge

By

Verified Buyer


I haven't had a chance to use the SAG, yet, but I bought it to help set up a Mexican/American Fender Precision bass (Mexican body, American neck and parts) that I put together. I need a couple of other tools to start the work, but should be able to borrow them locally. As usual, StewMac was fast with shipping and although the SAG is smaller than I thought it would be, it looks very precise and should do my PBass set up accurately.

5.0

Perfect.

By

Verified Buyer


Exactly what is needed. Great tool.

5.0

Essential set up tool

By

Verified Buyer


I like the new thicker gauge. Lost my old one, it felt like having a razor blade in your hand! Great measuring device makes setting string height a snap. Great as a fret rocker too.

2.0

Metric Version

By

Verified Buyer


The metric version is silly! The metric rule scale is strangely divided into 25mm increments and the string height scale is incremented by 0.25mm. Really, fractional metric, wouldn't 0.2mm make a lot more sense? It is a base 10 system used by all the world bar one country. Beware of US Metric.
I've owned this for 3+ years and used it as a small straight edge and square only. And it rusted.

5.0

Very useful

By

Verified Buyer


This tool does it all. A great setup tool, it beats my metal scale.

5.0

String Action Gauge

By

Verified Buyer


A quality item constructed with precision measurements and thickness of markings.

5.0

Nice tool!

By

Verified Buyer


Works as advertised.

5.0

Essential setup tool!

By

Verified Buyer


This is the most useful tool I've ever bought! String action, pickup height and other measurements are easy to task. Lines are easy to see, a mile better than "alternatives" offered around. Mine is metric. You can carry it anywhere, even in your wallet. Six years since I bought it and it's still perfect. Thanks!

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