Setup FAQ: Where should I actually measure action? — Haze Guitars
The correct string action
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How do I know what a good action or string height is for my guitar?
Setting Up Your Bass Guitar: Nut Action Height Adjustment (Step 3 of 4) | ELIXIR Strings - YouTube
Bass guitar Defret | Jack's Instrument Services
Guitar Setup Guide Part 2: Adjusting the Action - Northwest Guitars