From the leaders in world class acoustic tone comes a must-have tool for maintaining proper setup. For use on all stringed instruments.

• Setup Like the Pros

• Standard & Metric Measurements

• All Stringed Instruments

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)

Please allow 3-5 business days for processing.

Item not eligible for Martin Owners Club discount or any other promotion/sale.