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Amazon.com: Alnicov Stainless Steel String Action Ruler Guitar Setup Gauge Luthier Measuring Tool with User Guide for Electric, Acoustic Bass Guitars : Musical Instruments
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Amazon.com: Vencetmat Guitar String Action Gauge, String Height Ruler, Guitar Fret Rocker, Fret Leveling Guide, Buzzing Fret Catcher, 1mm Thickness, Laser Etching, High Precision Graduations,Luthier Tools : Musical Instruments
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