The Martin String Action and Measurement Gauge for Guitar / Bass is an essential tool for maintaining a proper setup.

For use on all fretted stringed instruments this gauge features metric and imperial units to help you quickly translate a variety of queries with certainty. It will enable you to perform setups like a pro, allowing you to easily measure the height from fret top to the bottom of string in millimetres or inches. Includes progressive increments and a depth gauge. This durable metal gauge will span multiple frets, ensuring it stays flat and perpendicular to the fret, making it easier and more reliable to use than a traditional ruler. The Martin String Action and Measurement Gauge is an essential tool for luthiers, guitar techs or hobbyists.

Below is the suggested 12th fret action (can go lower if no buzzing is present).

Bass Side Treble Side * ACOUSTIC 3/32” (2.4mm) 2/32” (1.6mm) * BASS/NYLON 4/32” (3.2mm) 3/32” (2.4mm) * CLASSICAL 5/32” (4.0mm) 4/32” (3.2mm) * UKULELE 5/64” (2.0mm) 5/64” (2.0mm)

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