Nut height : rLuthier

nut slot height   Dan nut slot files

If the string is touching the first fret, chances are the slot is tool low Confirmation of this is the string will buzz unfretted but not when

The digital nut slotting gauge allow for accurate measurement of string height at the first fret that can then be used to adjust the slot height An easy Height in middle 4 Fretboard radius height and the nut slot depth This theory based

super cuan slot Description Being able to measure your string height at the nut is a critical step in the setup process MusicNomad's precision Nut Height Gauge will help you  They say the nut slot height edge of the gauge is very thin so it should fit any slot We'll see But the tool has other funtions