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String Action Gauge

5.0
  • 287 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 287 reviews
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Displaying 5 of 29
5.0

String Action Gauge

By

Verified Buyer


Exactly what I wanted, and was looking for. I set my strings to a proper height, and playing is so much better now. Very satisfied.

5.0

String gauge

By

Verified Buyer


A very useful and handy tool to carry in the pocket.

5.0

Best in the industry 

By

Verified Buyer


This little card is the best in the industry. I'm on my third one in five years, as they seem to walk off stage or I loose, don't know. This time I'm buying some stewmac magnets and screwing them in my work box so it always has a solid home! I use it almost everyday on tour.

5.0

Great tool

By

Verified Buyer


At some level it's just a ruler, but one that has been specifically designed for the unique issues around setting string height. Nothing fancy, but very well designed and fits the "right tool for the job" description. Big fan!

5.0

String Action Gauge

By

Verified Buyer


Very convenient, much easier than using feeler gauges for everything. It seems a little expensive, but it's very good quality and should last a lifetime.

5.0

Great Tool

By

Verified Buyer


hello
I just want to say I am just a beginner at working with guitars I am a drummer by trade but have an interest in guitar repair. I was told by fellow musician friends ( guitar players ) this was a good tool to add to my tool box. I like the string depth gauge measurements they are all in one area and easy to read. I am sure this device will come in handy as I continue my education in the area of guitar repair.
Thanks
Richard

5.0

Must have tool for setups

By

Verified Buyer


I value this tool so much that I always keep a spare on hand. Perfect for all stringed instrument setups and can be used to measure relief, action and string height at the nut. Simple, durable and accurate!

5.0

Action Gauge

By

Verified Buyer


This was a gift for my grandson to give his bass teacher for Christmas. His instructor was extremely happy. His old one was plastic and markings were worn and very difficult to read. It was worth the price for us to see his excitement. He then showed us your screwdriver kit he had just received.

5.0

Worth the cost

By

Verified Buyer


I thought this was kind of expensive for a ruler but ordered it anyway. After receiving it I think it's worth the cost. This gauge is made of very thick metal (I don't think I could bend it with my hands) and it makes it easy to measure very small adjustments.

5.0

Fast & Accurate

By

Verified Buyer


This little guy is a great tool to check action quickly and accurately. I really like it, as is easy and fun to use, and I will use it on all guitars from here on out. It really takes any guesswork out of getting an exact action height reading.

Displaying 5 of 29


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