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String Action Gauge

5.0
  • 222 Reviews
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Inches

Item # 0670
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$18.95

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Metric

Item # 0670-M
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$18.95

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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
  • 4.86 average rating from 222 reviews
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5.0

Should have bought one long ago!

By
(Customer's Reviews)


The SAG is the best to measure and adjust action without second guessing my small ruler.

5.0

Best simple tool ever

By
(Customer's Reviews)


If you are doing set ups you need this tool .... very simple but makes life so much better

5.0

A Godsend For Quick String Height Checks

By
(Customer's Reviews)


This precision gauge is so much easier to use when checking neck relief and string height than a standard ruler or spare change. It stays flat on the frets when measuring unlike an ordinary ruler.
Well worth the money for the time it will save you

5.0

Extremely easy to use

By
(Customer's Reviews)


This is a fantastic tool for guitars and basses. Prior to this I was estimating distances using a mixture of a ruler with 32nds and automotive feeler gauges. The best part is how it easily lines up across multiple frets, making it certain that you're getting a level and accurate reading. It should be noted that for checking truss rod adjustment I still use a capo and automotive feeler gauges, as it's a bit easier for me to feel the gauge hit the string than it is for me to see a .01 inch gap accurately. Overall I am more than satisfied with this purchase.

5.0

If you want to do your own guitar set ups, this is the first tool you should have.

By
(Customer's Reviews)


I use the String Action Gauge for multiple guitars that I play. It takes the guess work out of adjustments and is easy to use. Now when I switch from one to the other, my string height is consistent and set up just the way I like them. All of them are easier to play and they sound better too. What more could you ask for?

5.0

Aswome tool Great service!

By
(Customer's Reviews)


I recently bought a tool kit from my local guitar shop . 90 bucks for about 10 bucks worth of tools in a fancy carry pouch. It came with a ruler and had all the wrong increments to go with the instructions. I returned it and bought two of these string action gauges (one standard inches the other metric) and they are easy to read easy to use and well worth the money. Love this company they have all the tools you ever need to fix your guitar. service is great shipping to Canada was really fast (7 days) I was expecting it to be 4-6 weeks! I was happy to get the rulers so fast and recommend this company to anyone looking for quality tools to get the job done. Thanks stewmac!

5.0

Very useful

By
(Customer's Reviews)


I've used this a few times now and it's fine for the job.

5.0

String Action Gauge

By
(Customer's Reviews)


Debated about whether this was worth the price, but could certainly it being helpful. It is well worth the price, and I've done many more things with it than I even imagined. I will use this a LOT! Great item, great idea, Stew-Mac guys developed this themselves, Way to GO!

5.0

Superb

By
(Customer's Reviews)


Good production, good service. Thanks!

5.0

Must have tool. !

By
(Customer's Reviews)


The string gauge does just what it was designed to do. So much easier than trying to use a ruler. A must have tool for "older eyes"

Displaying 4 of 23
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StewMac PDF Catalog, page 16 See String Action Gauge
on page 16 of our StewMac Catalog PDF

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