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Home : Tools : Measuring tools : String Action Gauge

Fast, accurate measurements for setups

String Action Gauge

Inch and metric versions now available!
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

See details below
String Action Gauge Play video
Item# Description In stock Price Quantity
0670 Inches Yes $18.95
0670-M NEW! Metric Yes $18.95

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Instructions
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.
Measuring in thousandths is great. 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
Athens OH

It's amazing! I use it every day for everything — I'd be lost without it! I used a six-inch scale for the past twelve or thirteen years, but now I don't use that much anymore.
John LeVan
Luthier Author
Nashville TN

I just received my String Action Gauge yesterday. I had no idea just what a difference a tool like this would make. It's made fast guitars even faster. It has paid for itself in the first day already. Thanks a million for developing this little wonder!
Bill Jehle
Decatur AL



Shown on page 12 of our latest catalog.

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