How do I know what a good action or string height is for my guitar?
String Action Gauge - StewMac
Amazon.com: StewMac String Action Gauge And Ruler, Metric, Stainless Steel - Designed by StewMac, The Original measuring tool for acoustic and electric guitar, and bass setup : Musical Instruments
String Action Gauge - StewMac
Pro Steel String Action Gauge Ruler Guide Setup Guitar Measuring Luthier Tool|Guitar Parts & Accessories| - AliExpress
Buy MusicNomad Precision String Action Gauge | Sam Ash Music