Here are our picks for the best guitar string height gauges.
Our Editor’s Best Guitar String Height Gauges Reviews
Dunlop Action Gauge System 65 Guitar Tools

Key Features:
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This is a guitar string height gauge that provides precise measurements so that you can set up your instrument for the best playability.
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The guitar string height gauges are designed to help shoppers select the right strings for their guitar. The gauges measure the height of the strings from the guitar’s bridge to the nut.
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This is a guitar string height gauge that is 5 inches long. It is used to measure the height of guitar strings.
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This product is a guitar string height gauge. The width of the package is 0.75 inches.
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The DGT04 is a set of 4 guitar string height gauges that measure the height of your strings above the fretboard. This is a useful tool for setting up your guitar, or for adjusting the action of your strings.
String Action Gauge Ruler, Guitar Height Gauge Set Up Tool for Electric Bass and Acoustic Guitar

Key Features:
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This guitar string height gauge is made of stainless steel, making it both durable and beautiful. It is a widely used tool for measuring the height of guitar strings.
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This is a guitar string height gauge that is used to set the string height, for the depth of the saddle slot, and for the nuts, saddles, and pole pieces.
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This guitar string height gauge has a conversion chart of string action at the 12th fret printed on one side.
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This is a guitar string height gauge that can be used for electric guitars, bass guitars, acoustic guitars, mandolins, and banjos.
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This is a guitar string height gauge, which is a handy tool for measuring the height of guitar strings. It is pocket-sized for convenience, and comes with an instruction booklet.
MusicNomad Precision String Action Gauge Ruler for String Height- Metric, SAE, 64ths (MN602)

Key Features:
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The guitar string height gauges are accurate and easy to read. The black finish is contrasted with deep etched white markings.
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These guitar string height gauges let you measure the height of your strings in either inches, metric, or 64th units, so you can customize them to your preference.
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If you’re looking for an easy way to measure the height of your guitar strings, and get the perfect sound every time, this is the product for you. The convenient chart takes out the guesswork, and the pickup ruler helps you dial in your sound even more. Bonus feature: use the side that lays across three frets as a fret rocker to check for any uneven fret heights.
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This product is a high quality guitar string height gauge made out of stainless steel. It has smooth edges and the numbers and lines are printed on so they won’t rub off. This product is built to last for years.
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This tool is designed to help you set up your guitar in the simplest way possible. The KISS method uses our precision gauges and tool sets to help you get the perfect string height for your instrument.
String Action Ruler Gauge,Guitar Repairing Tool for Luthier,Fit for Guitar,Ukulele,Bass,Banjo,Mandolin

Key Features:
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This guitar string height gauge is made of high strength stainless steel for durability and is laser etched for precise and clear calibration.
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This is a set of string height gauges for different types of guitars. The gauges are engraved with standard measurements in inches and millimeters.
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These guitar string height gauges are suitable for use with a variety of stringed instruments, including guitars, basses, ukuleles, banjos, and mandolins. They are designed to help you set the correct string height for your instrument, and can be used to measure both the overall height of the string, and the height of the string above the fretboard.
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This is a set of guitar string height gauges that can be used to measure the distance between the strings, the height of the bridge saddle, the depth of the fret groove, and the depth of the electric guitar pickup. It also comes with a direction guide for repairing your guitar.
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This guitar string height gauge is pocket-sized, so you can take it with you anywhere. It’s also much lighter than a caliper, so it’s easier to carry around.
BIGTEDDY – String Action Ruler Gauge Measuring Tool for Electric Acoustic Guitar Bass Mandolin Banjo

Key Features:
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The guitar string height gauges are designed for use with string instruments such as guitar, bass, mandolin, and banjo. They are made of durable materials and are easy to use, making them an essential tool for any musician.
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This is a pocket-sized guitar string height gauge that can be used on both sides. The imperial (inches) side is for one side, and the metric (millimetres) side is for the other side. There is also a conversion chart of string action at the 12th fret printed on the back.
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This product is a set of guitar string height gauges. They can be used to measure the height of the nut, string, bridge, pickup pole piece, saddle, and fret slot depths.
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This string height gauge is perfect for accurately measuring the action on string instruments such as guitar, bass, mandolin, and banjo.
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These guitar string height gauges are made of stainless steel for durability and accuracy. They have a nice outlook and are perfect for use by guitarists.
MusicNomad Truss Rod Gauge & String Action Gauge Combo Bundle (MN614)

Key Features:
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The two most popular guitar string height gauges are available in one combo pack. These gauges are used in the setup process for electric, acoustic, classical and bass guitars.
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If you are looking for a string action gauge that is precise and easy to read, then this is the one for you. The black finish and white markings contrast well with each other, making it easy to see the measurements. The chart on proper height by instrument type is a convenient way to take the guesswork out of choosing the right height for your instrument.
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The String Action Gauge is a tool that helps you adjust the height of your guitar strings. It includes a Pickup Height Ruler to help you dial in the perfect pickup sound. The Gauge is designed with 4 different side lengths to help you find the side that lays across 3 frets. You can use the Fret Rocker to check for any uneven fret heights.
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This is a set of three guitar string height gauges for electric, acoustic, classical, and bass guitars, with easy-to-follow instructions printed right on the handle. The set includes the three most common truss rod neck relief measurements: .006″, .008″, and .010″. The innovative pick capo assists in making measurements.
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The KISS Method is a simple, step-by-step guide to setting up your guitar. Using the Precision Gauges & Tool Sets, you can easily follow the steps and get your guitar playing and sounding great.
TIMESETL 2Pack Stainless Steel Feeler Gauge Dual Marked Metric and Imperial Gap Measuring Tool 32 Blades + String Action Ruler Gauge Tool for Guitar Player & Luthier & Mechanic Auto Repair

Key Features:
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This is a set of guitar string height gauges made from high-quality stainless steel. The gauges have rounded off edges to prevent scratches or cuts, and a smooth, polished surface. They are also treated with anti-rust oil to prevent rust.
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This is a feeler gauge and string action ruler combo pack that comes with both imperial and metric measurements. The gauges are easy to use and come in a plastic holder.
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This is a feeler gauge for measuring the height of guitar strings. It is 8.8cm long and 1.3cm wide. The thickness of the blade ranges from 0.035″ (0.88mm) to 0.0015″ (0.04mm). It is coated with light oil to prevent rust and sticking. The thumb screw is used to remove and protect the blade.
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The guitar string height gauges are designed to be accurate and clear when measuring string height, pickup height, etc. They are made of durable materials that will not fade over time, and are double-sided for easy use.
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This is a set of guitar string height gauges that can be used to measure the gap width or thickness of various objects. They are accurate and have almost no errors, making them suitable for use by designers, engineers, mechanics, and other professionals.
String Action Gauge Ruler, Guitar Height Gauge, Guitar Set Up Repairing Luthier Tool for Guitar,Ukulele,Bass,Banjo,Mandolin

Key Features:
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These guitar string height gauges are perfect for setting up your guitar’s string height, saddle slot depth, and nuts.
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This is a guitar string height gauge tool, made of stainless steel for stability and durability.
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This is a guitar string height gauge that has a conversion chart of string action at the 12th fret printed on one side.
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This guitar string height gauge is designed to fit electric guitars, bass guitars, acoustic guitars, mandolins, banjos, and more. It is a ruler-style gauge that can help you measure the height of your strings, so you can ensure they are all the same length.
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This guitar string height gauge is a handy tool that is pocket-sized for convenience. It comes with an instruction manual and three guitar picks.
Guitar String Action Gauge, COENGWO String Height Gauge Ruler Guitar Setup Measuring Tool Kit for Guitar, Bass, Mandolin, Banjo

Key Features:
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This is a string gauge ruler that is suitable for measuring string height, ridge saddle slot depth, nuts saddles and pole pieces for guitar, bass, mandolin, banjo, etc.
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This is a guitar string height gauge made of stainless steel. It is used to measure the height of guitar strings.
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The guitar string height gauges for a shopper is a ruler that provides precise and clear digital measurements of a guitar string’s height. The ruler also has a 12th fret reference chart printed on the back side, in case the shopper needs to know where that measurement falls on the guitar neck.
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This is a pocket-sized guitar string height gauge that is easy to take with you wherever you go. It is small enough to fit inside your toolkit or wallet, making it a convenient tool for any guitar player.
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These are guitar string height gauges that make a great gift for any musician in your life. They are perfect for setting the string height on your guitar, and make a great addition to any guitar player’s toolkit.
Vencetmat Guitar String Action Gauge, String Height Ruler, Guitar Fret Rocker, Fret Leveling Guide, Buzzing Fret Catcher, 1mm Thickness, Laser Etching, High Precision Graduations,Luthier Tools

Key Features:
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The guitar string height gauges are made of military quality, heavy duty stainless steel for durability and strength. They are designed to accurately measure the height of guitar strings for optimal performance.
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This is a set of guitar string height gauges that are high precision and have laser etching scales for permanent retention.
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The guitar string height gauges are designed to create a very flat and smooth edge on the strings, which will help to create a better sound.
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If you’re looking for a guitar string height gauge that’s easy to read and won’t give you any unwanted mirror reflections, this is the one for you.
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The guitar string height gauges are for a shopper who wants a thickness of 1mm. They don’t need an easy-to-bend, paper-thin Fret Rocker.
Guitar String Height Gauges FAQs
1. What is the ideal string height for a guitar?
The ideal string height for a guitar is 3/32″ (2.38mm) at the 12th fret.
2. How can I tell if my string height is too high or too low?
There are a few ways to tell if your string height is too high or too low. One way is to look at the gap between the bottom of the string and the top of the 12th fret. If the gap is too big, then the string height is too high. If the gap is too small, then the string height is too low.Another way to tell is by fretting the 1st fret and the 17th fret (or the highest fret on your guitar). If there is a big gap between the string and the 17th fret, then the string height is too high. If there is a small gap between the string and the 17th fret, then the string height is too low.
3. How do I adjust my string height?
If you want to adjust the string height on your guitar, you will need to use a ruler to measure the distance from the top of the 12th fret to the bottom of the string. For example, if the distance is 3/32 of an inch, you will need to raise the string height by 3/32 of an inch.
4. Why is it important to have the correct string height?
If the string height is not set correctly, the guitar will be difficult to play and will not sound good.
5. What are the consequences of having an incorrect string height?
If the string height is incorrect, the guitar will not be able to be played properly. The strings will either be too high or too low, making it difficult to press down on the fretboard. This can lead to incorrect intonation and a generally poor sound.
Conclusion
There are many great guitar string height gauges on the market. Our list of the best guitar string height gauges will help you save time researching and choosing the best one for you.