Digital indicator with zero button enables precise measurement at the first fret for accurate nut filing
Switchable between inch and mm units for versatile use with different measurement preferences
Brass base fits over strings and rests on the fretboard for stable, clear readings
Compatible with most acoustic and electric guitars, mandolins, and banjos
Available in guitar and bass guitar versions to fit different string spacings
Summarized by Shop
The Digital Nut Slotting Gauge is designed to accurately measure string height over the 1st fret, helping you determine and fine-tune nut slot depth with greater precision.
Because nut slot height is most accurately evaluated at the first fret, this gauge is ideal for nut setup and adjustment. For measuring string action farther up the ne
Measurement Accuracy
0.0005 in (0.01 mm)
Base Material
Brass
Mounting Hole Diameter
3/8 in
Measurement Units
Inch and mm
Compatible Instruments
Acoustic and electric guitars, mandolins, banjos, bass guitars
Summarized by Shop
4.8
80 ratings
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Barre Chords
Well what a difference i lowered strings to (Low E .020", A&D to 018", G&B 016" High E 014" on my Eastman E2 OM Oh My Goodness, first thing I noticed was Barre Chords are effortless.
This truly was one of my better tool Purchases. The company Elmer were easy to order from item came quickly and well packaged, I am well satisfied with my purchase Thank you to all at Elmer.
F
Fred · August 29, 2026
Great results
Got sick of paying techs to setup my guitars so I started learning on my own. This tool has really helped me get good consistent results. It’s easy to use too. Needs a light.
J
Joe · August 8, 2026
Finally gave in ....
I've been putting off getting this tool for a while, thinking that with a combination of string gauges, feelers and other tools I could nail the string height at the 1st fret. Well, after multiple attempts and consistently finding my measurements were inconsistent and imprecise, I gave up and bought this tool. I don't call many tools "Game Changing", but this one truly is. The ability to precisely file out successively deeper nut slots and measure the effect in very small increments is just plain cool. This is the first time I have been confident that the action at the first fret is uniformly at the desired height. It is so worth not risking cutting the slots too deep on the hope and guesstimate that they will be correct. Had I bought this earlier I could have avoided multiple nut slot corrections and nut replacements. No regrets, except putting off the purchase till now.