I don't measure either. I set the relief, then adjust height so there is no buzz with heavy right hand attack, on any note up and down the strings. Heavier than you would normally play. If it doesn't buzz at that point, you don't have to worry about buzzing anywhere. That happens to be where the best tone lives as well. Too low an action, and along with buzz, and a lack of being able to play wide, dynamically, you get weak, thin tone.