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This is the Original String Action Tool, developed here at StewMac by Dan Erlewine and Don MacRostie
Think of it as a "Swiss Army Ruler" for setup adjustments on any stringed instrument
Fast, accurate measurements for setups.
Features a progressive string height scale
Made of durable stainless steel with precision-etched markings
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 heightNo 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 ErlewineDeveloped 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 separat