String Action Gauge

5.0
  • 160 Reviews
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Inches

Item # 0670
In stock, ready to ship!

$18.95

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Metric

Item # 0670-M
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$18.95

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String Action Gauge

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. 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.


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.

Customer Reviews

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5.0
  • 4.87 average rating from 160 reviews
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5.0

Great Tool

By
(Customer's Reviews)


This is a wonderful tool that takes all the guess work out of string height and nut slot depth.. Don't know how I did without one of these for so long..

4.0

0670

By
(Customer's Reviews)


Quality tool.

5.0

Best tool for a good setup.

By
(Customer's Reviews)


Cheap, easy to use, will help you get great results with your setups.

5.0

Indispensible

By
(Customer's Reviews)


If Stewart-MacDonald were ever to go out of business, there are certain tools that would be very difficult to replace. This is one of them. I have three of these. I use mine most of the time for measuring string height over the 12th fret and it does that exceedingly well. The gauge lays along several frets which guarantees that the rule is exactly perpendicular to the fingerboard, reducing potential error. On the back is a table listing quick conversions between fractions of an inch and metric equivalents which is extremely useful; I use it all the time. All markings on the rule are etched and permanent. Great tool.

5.0

Very Handy

By
(Customer's Reviews)


Another great tool for the box of tricks. U-beaut handy item.

5.0

Quick and easy

By
(Customer's Reviews)


Great little tool. Quickly "eye ball" a setting and quick adjust tool.

5.0

Best tool i have.

By
(Customer's Reviews)


Hands down the most used and best tool I have. It is simple to use and has improved the speed and accuarcy of my setups. I also use it to make adjustments to saddles, nuts, bridges, pick-ups, etc.

4.0

Can't put it away

By
(Customer's Reviews)


Great tool for set ups,and I also use for marking nuts before cutting With all the different measurements, and converter on back easiest way to check any gap or space you can think of, I find myself constantly checking action, neck bow, pickup height on my guitars and friends guitars. I'm a lefty who doesn't mind converting right hand guitars myself.

5.0

String Action Gauge

By
(Customer's Reviews)


Super quality tool. I am a "happy camper" with it.

5.0

Math made simple

By
(Customer's Reviews)


This is one of the most useful measuring tools you can have when it comes to instruments. If it is small and needs to be measured in any way, this is your friend.

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Shown on page 16 of our latest catalog.