It is faster to use than any ruler and stays parallel to the fretboard - much easier than trying to hold a ruler perpendicular to the round frets. Multi-functional tool for guitar repair: The String Action Ruler Guitar Repair Tool is a multi-functional tool that can be used for a variety of guitar repair tasks.
This product would be ideal for professional luthiers and serious guitar hobbyists who require an accurate, versatile Steel String Action Gauge to set up and maintain their instruments.
