--- product_id: 5601619 title: "FretGuru String Action Gauge Guitar Fret Ruler Precision Fret Rocker Precise CNC Machined, Diamond Honed, Polished Edge Guitar String Height Gauge Luthier Tool with Genuine Leather Case" brand: "fretguru" price: "VT11733" currency: VUV in_stock: true reviews_count: 8 category: "Fret Guru" url: https://www.desertcart.vu/products/5601619-fretguru-string-action-gauge-guitar-fret-ruler-precision-fret-rocker store_origin: VU region: Vanuatu --- # Includes genuine leather case 0.005" precision increments CNC machined diamond-honed edges FretGuru String Action Gauge Guitar Fret Ruler Precision Fret Rocker Precise CNC Machined, Diamond Honed, Polished Edge Guitar String Height Gauge Luthier Tool with Genuine Leather Case **Brand:** fretguru **Price:** VT11733 **Availability:** ✅ In Stock ## Summary > 🎸 Elevate your guitar setup game with precision that hits every note perfectly! ## Quick Answers - **What is this?** FretGuru String Action Gauge Guitar Fret Ruler Precision Fret Rocker Precise CNC Machined, Diamond Honed, Polished Edge Guitar String Height Gauge Luthier Tool with Genuine Leather Case by fretguru - **How much does it cost?** VT11733 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/5601619-fretguru-string-action-gauge-guitar-fret-ruler-precision-fret-rocker) ## Best For - fretguru enthusiasts ## Why This Product - Trusted fretguru brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Nut Slot Mastery:** Unique .010" thick corner slips perfectly into nut slots for flawless string height calibration at the nut. - • **All-in-One Multi-Tool:** Combines string action gauge, fret rocker, fret wear gauge, and nut slot height tool in one compact, easy-to-read instrument. - • **Durability Meets Elegance:** Crafted from stainless steel with diamond-honed finish, paired with a premium handmade leather case for the discerning luthier. - • **Engineered for Effortless Setup:** CNC-machined fret rocker with polished edges finds high frets without scratching, making pro-level adjustments a breeze. - • **Pinpoint Precision in Thousandths:** Laser-etched markings ensure no fade, delivering ultra-accurate string height and fret wear measurements down to .005" increments. ## Overview The FretGuru String Action Gauge is a professional-grade, CNC-machined stainless steel multi-tool designed for guitarists and luthiers seeking ultra-precise string height, fret wear, and nut slot measurements. Featuring laser-etched markings that never fade, diamond-honed polished edges, and a unique nut slot gauge, it simplifies setup with accuracy down to .005" increments. Packaged with a genuine leather case, this tool blends durability, elegance, and functionality to transform your guitar maintenance into a precision craft. ## Description Buy FretGuru String Action Gauge Guitar Fret Ruler Precision Fret Rocker Precise CNC Machined, Diamond Honed, Polished Edge Guitar String Height Gauge Luthier Tool with Genuine Leather Case: Tools - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Critical measurements are easily made with an intuitive, easy-to-read multi-tool. - I am a bass player moving over to guitar, and I'm lucky enough to have a few Gibsons, vintage Fenders and Hamers, and a few Rickenbackers. But I'm not a guitar geek -- I just have poor impulse control. I did come to realize, though, that the instruments really were only as good as their setup, and that I sure don't have the talent to overcome a poor setup. And I can't rely on others to have the time to do setup work when I need it. So I've slowly been teaching myself. And in doing so, I was appalled at some of the imprecise methods, and makeshift tools, that people online (and in a couple'a books) were recommending. So, after a lot of research, I settled on the Fret Guru. Before I could buy mine, though, FretGuru introduced the FretGuru2. This thing is incredible. It's a finely machined dream, with useful measurement after measurement. The no brainers are: (1) the string height measurements [in 100ths of an inch, or 10/1000" increments]. Bridge and, if necessary, truss-rod adjustments are a breeze after determining string height. The FretGuru2 allows a user to easily read string height precisely - the measuring lines are fine, but in sharp gold/white on black relief that can be seen by candlelight -- and I've had to do just that; (2) fret height measurement, in 5/1000" increments. The slotting of each gauged measurement allows you to easily measure the lowest area of fret wear on any given fret, and to actually see spots where differing strings sizes and attacks have unevenly ground down the fret. If the frets are not too badly worn, they can be leveled and easily measured throughout the process -- and if they're toast, you'll quickly see; and (3) nut slot depth. This measurement was key to me -- I found that the nut on an older Rick 4001 was down far enough to effectively preclude clean fretting an intonation. And the fretguru2 made it a breeze to see the nut-slot depth in relation to the first fret. I've mentioned the obvious ones that will be used constantly, but I should also mention that there are super-fine rulers, in both metric and English measurement, and a ready conversion chart as well. Because this is so precise, so intuitive, and SO EASY to READ, I've given it a five -- I can't see flaws, and the quality (in an easy-to-manage size) is outstanding. Christmas gifts for my other idiot guitar and bass nuts. . . . Review: A great tool with few caveats - Below I’m going to review the product but also shed some light on the creator of this product. The overall score is a reflection of the product itself and not the creator because these are product reviews, not seller reviews, but it’s worth talking about both. About the product itself: This tool is fantastic for everyone from weekend warrior string instrument players to luthiers. Primarily this is a string height measurement tool, everything is kinda plays second fiddle, however, I imagine these secondary gauges will be really useful when the time is right. It’s nice that the creator maximized its usefulness. As far as accuracy is concerned it’s dead-on from what I can tell, I tested with a very high precision caliper. In the past for set up I used this same caliper but I found it annoying because getting precise measurements is an exercise in patience. For maximum accuracy I would use my very expensive caliper to measure the string width, then I would measure from the top of a fret to the top of the string using the depth gauge and then subtract the string width, I would do this three times and then average the results. I didn’t like measuring from the top of the fret to the bottom of the string because it’s hard (for me anyway) to do this precisely. We’re talking thousandths of an inch and it was difficult for me to tell if I was too low or too high using this method. I have also used feeler gauges in the past, but these are very one-dimensional and there was never a feeler gauge that was quite right, so I would stack them together, but I never felt confident. I do like that all markings are laser etched and not printed. I work on bicycles as well and I have some tools with printed markings which have faded over time, I’m confident that this tool will last me a very long period without rubbing or fading. There are only a couple notable (though minor) nitpicks. First, it really is expensive for what it is. You can find very similar tools for less than $10. I’m a big supporter in local economies and I trust that the FretGuru is near 100% accurate, so I went with this tool over saving cash and buying something made in China. In the end I knew what I was buying and paying for, so I can’t knock it down. Second, the tool is very busy with markings. “FretGuru 2” is etched in a large font and and there are five arrows with descriptions etched as well. These arrows/descriptions are only useful once, after which they don’t have any use and only clutter things up. I would prefer a small instruction pamphlet describing each tool because knowing what the gauges are for is easy after learn it the first time. I really like cleanliness and minimalism, but in the grand scheme this is pretty much a non-issue. Finally, I really wish I could choose an option that had markings measured in metric. There is a handy conversion chart on the back, but I would prefer metric markings over flipping it back and forth for conversions, that being said this is another small nitpick. About the creator: It really rubbed me the wrong way when I learned that Bernie basically bribed people for positive reviews. Apparently he offered the leather case if the customer gave a positive review. The product should speak for itself. Thankfully this seems to be an issue from the past because a leather case was included with mine and my tool didn’t come with a piece of paper trying to bribe me into leaving positive feedback. I learned about this issue after ordering and I was prepared to return this item if I received it along with a piece of paper trying to persuade me into leaving a positive review because that goes against my morals. Thankfully this is no longer an issue. Also, Bernie comes across as a bit too impassioned in his responses to low rated reviews. He tends to respond verbosely with heaps of sarcasm when paying customers have complaints. I like his passion for this product, but you have to take these complaints in stride, not yell at your customers telling them that they are wrong. This will only put potential future customers off, had I read these reviews and responses before purchasing this product then I probably would have looked elsewhere. Finally, this product is a bit oversold by Bernie. I get that he is impassioned but he acts like this tool is the second coming. Yes it’s accurate, yes it’s useful, but he treats this as the be-all and end-all of gauges for guitar/bass setup. Yes this tool will help you achieve good results, but so will many other tools. We have been setting up guitars/basses successfully long before this existed, so it’s not as revolutionary as Bernie might lead you to believe. That being said, he is trying to run a business and make money (aren’t we all?) so overselling your product(s) is to be expected, Bernie just goes a bit too far. Conclusion: There are many great features here and it’s a fantastic tool. It’s not perfect in every way possible (what is?) but it will help amateurs and pros alike achieve optimal results. The creator can come across as overbearing, but he is passionate about his product which I suppose is a good thing overall. I do highly recommend this product, especially if you are like myself and want to support local economies, but like everything else in this world it’s not completely without flaws. Thank you Bernie for creating this! I wish you continued success! ## Features - Precise string action gauge in .010" (ten thousandths of an inch) number increments, and .005" line increments = super accurate guitar setup! The markings are NOT printed - they are actually laser etched through the black surface, deeply into the stainless metal. No printing to rub off! Also check out the new, precision 64ths string action gauge. The accuracy of the FretGuru 2 will bring your guitar out of the realm of woodworking and into another world of playability. - Unique, first of it's kind fret height/fret wear gauge in .005" increments. No more fumbling with calipers, straightedges or feeler gauges. - Fret rocker! The 3 unequal length sides are CNC machined, precision diamond honed and polished. Now you can find that pesky high fret without scratching your frets. - Another first - the uniquely designed Nut Slot Height gauge, which has already been a massive time-saver here on the workbench. - You’ll notice the silver square on the bottom corner of the gauge. This corner is designed and engineered to be just under .010” thick, which allows it to slip into each nut slot - including the narrow high e slot. - Simply rest the thin corner into the bottom of each nut slot - and the other end across to the 2nd fret, then measure the gap as the gauge passes over the 1st fret. It's never been easier to zero in on the perfect string height as it leaves the nut. Also, be sure to check out the separate listing for the sweet handmade custom leather case! Double click on the photos for the expanded view. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00HG29EYI | | Back Material Type | Metal | | Best Sellers Rank | #3,087 in Musical Instruments ( See Top 100 in Musical Instruments ) #58 in Guitar Tools #594 in Electric Guitar Parts | | Body Material | Metal | | Body Material Type | Metal | | Brand | FretGuru | | Brand Name | FretGuru | | Color | inch | | Customer Reviews | 4.8 out of 5 stars 2,004 Reviews | | Fretboard Material Type | Wood | | Guitar Bridge System | Fixed | | Guitar Pickup Configuration | H-H | | Hand Orientation | Left | | Included Components | Leather Case | | Instrument | Guitar | | Instrument Size | Compact | | Manufacturer | FretGuru | | Manufacturer Part Number | 7539563258 | | Material Type | Stainless Steel | | Model Name | Fre-7925 | | Model Number | Fre-7925 | | Neck Material Type | Metal | | Scale Length | 25.125 inches | | String Material Type | Stainless Steel or Alloy Steel | | String Nut Width | 0.1 Inches | | Top Material Type | Alder Wood | | UPC | 617209380118 061720938011 | | Unit Count | 1.0 Count | | Warranty Description | Na. | ## Product Details - **Back Material Type:** Metal - **Body Material:** Metal - **Brand:** FretGuru - **Color:** inch - **Fretboard Material Type:** Wood - **Guitar Pickup Configuration:** H-H - **Hand Orientation:** Left - **Neck Material Type:** Metal - **String Material Type:** Stainless Steel or Alloy Steel - **Top Material Type:** Alder Wood ## Images ![FretGuru String Action Gauge Guitar Fret Ruler Precision Fret Rocker Precise CNC Machined, Diamond Honed, Polished Edge Guitar String Height Gauge Luthier Tool with Genuine Leather Case - Image 1](https://m.media-amazon.com/images/I/81tUcu25P6L.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Critical measurements are easily made with an intuitive, easy-to-read multi-tool. *by M***N on March 11, 2015* I am a bass player moving over to guitar, and I'm lucky enough to have a few Gibsons, vintage Fenders and Hamers, and a few Rickenbackers. But I'm not a guitar geek -- I just have poor impulse control. I did come to realize, though, that the instruments really were only as good as their setup, and that I sure don't have the talent to overcome a poor setup. And I can't rely on others to have the time to do setup work when I need it. So I've slowly been teaching myself. And in doing so, I was appalled at some of the imprecise methods, and makeshift tools, that people online (and in a couple'a books) were recommending. So, after a lot of research, I settled on the Fret Guru. Before I could buy mine, though, FretGuru introduced the FretGuru2. This thing is incredible. It's a finely machined dream, with useful measurement after measurement. The no brainers are: (1) the string height measurements [in 100ths of an inch, or 10/1000" increments]. Bridge and, if necessary, truss-rod adjustments are a breeze after determining string height. The FretGuru2 allows a user to easily read string height precisely - the measuring lines are fine, but in sharp gold/white on black relief that can be seen by candlelight -- and I've had to do just that; (2) fret height measurement, in 5/1000" increments. The slotting of each gauged measurement allows you to easily measure the lowest area of fret wear on any given fret, and to actually see spots where differing strings sizes and attacks have unevenly ground down the fret. If the frets are not too badly worn, they can be leveled and easily measured throughout the process -- and if they're toast, you'll quickly see; and (3) nut slot depth. This measurement was key to me -- I found that the nut on an older Rick 4001 was down far enough to effectively preclude clean fretting an intonation. And the fretguru2 made it a breeze to see the nut-slot depth in relation to the first fret. I've mentioned the obvious ones that will be used constantly, but I should also mention that there are super-fine rulers, in both metric and English measurement, and a ready conversion chart as well. Because this is so precise, so intuitive, and SO EASY to READ, I've given it a five -- I can't see flaws, and the quality (in an easy-to-manage size) is outstanding. Christmas gifts for my other idiot guitar and bass nuts. . . . ### ⭐⭐⭐⭐⭐ A great tool with few caveats *by S***N on April 4, 2019* Below I’m going to review the product but also shed some light on the creator of this product. The overall score is a reflection of the product itself and not the creator because these are product reviews, not seller reviews, but it’s worth talking about both. About the product itself: This tool is fantastic for everyone from weekend warrior string instrument players to luthiers. Primarily this is a string height measurement tool, everything is kinda plays second fiddle, however, I imagine these secondary gauges will be really useful when the time is right. It’s nice that the creator maximized its usefulness. As far as accuracy is concerned it’s dead-on from what I can tell, I tested with a very high precision caliper. In the past for set up I used this same caliper but I found it annoying because getting precise measurements is an exercise in patience. For maximum accuracy I would use my very expensive caliper to measure the string width, then I would measure from the top of a fret to the top of the string using the depth gauge and then subtract the string width, I would do this three times and then average the results. I didn’t like measuring from the top of the fret to the bottom of the string because it’s hard (for me anyway) to do this precisely. We’re talking thousandths of an inch and it was difficult for me to tell if I was too low or too high using this method. I have also used feeler gauges in the past, but these are very one-dimensional and there was never a feeler gauge that was quite right, so I would stack them together, but I never felt confident. I do like that all markings are laser etched and not printed. I work on bicycles as well and I have some tools with printed markings which have faded over time, I’m confident that this tool will last me a very long period without rubbing or fading. There are only a couple notable (though minor) nitpicks. First, it really is expensive for what it is. You can find very similar tools for less than $10. I’m a big supporter in local economies and I trust that the FretGuru is near 100% accurate, so I went with this tool over saving cash and buying something made in China. In the end I knew what I was buying and paying for, so I can’t knock it down. Second, the tool is very busy with markings. “FretGuru 2” is etched in a large font and and there are five arrows with descriptions etched as well. These arrows/descriptions are only useful once, after which they don’t have any use and only clutter things up. I would prefer a small instruction pamphlet describing each tool because knowing what the gauges are for is easy after learn it the first time. I really like cleanliness and minimalism, but in the grand scheme this is pretty much a non-issue. Finally, I really wish I could choose an option that had markings measured in metric. There is a handy conversion chart on the back, but I would prefer metric markings over flipping it back and forth for conversions, that being said this is another small nitpick. About the creator: It really rubbed me the wrong way when I learned that Bernie basically bribed people for positive reviews. Apparently he offered the leather case if the customer gave a positive review. The product should speak for itself. Thankfully this seems to be an issue from the past because a leather case was included with mine and my tool didn’t come with a piece of paper trying to bribe me into leaving positive feedback. I learned about this issue after ordering and I was prepared to return this item if I received it along with a piece of paper trying to persuade me into leaving a positive review because that goes against my morals. Thankfully this is no longer an issue. Also, Bernie comes across as a bit too impassioned in his responses to low rated reviews. He tends to respond verbosely with heaps of sarcasm when paying customers have complaints. I like his passion for this product, but you have to take these complaints in stride, not yell at your customers telling them that they are wrong. This will only put potential future customers off, had I read these reviews and responses before purchasing this product then I probably would have looked elsewhere. Finally, this product is a bit oversold by Bernie. I get that he is impassioned but he acts like this tool is the second coming. Yes it’s accurate, yes it’s useful, but he treats this as the be-all and end-all of gauges for guitar/bass setup. Yes this tool will help you achieve good results, but so will many other tools. We have been setting up guitars/basses successfully long before this existed, so it’s not as revolutionary as Bernie might lead you to believe. That being said, he is trying to run a business and make money (aren’t we all?) so overselling your product(s) is to be expected, Bernie just goes a bit too far. Conclusion: There are many great features here and it’s a fantastic tool. It’s not perfect in every way possible (what is?) but it will help amateurs and pros alike achieve optimal results. The creator can come across as overbearing, but he is passionate about his product which I suppose is a good thing overall. I do highly recommend this product, especially if you are like myself and want to support local economies, but like everything else in this world it’s not completely without flaws. Thank you Bernie for creating this! I wish you continued success! ### ⭐⭐⭐⭐⭐ Worthwhile, convenient tool. *by N***1 on September 6, 2025* Top quality, as represented. Leather case is a nice addition. Good tools last a lifetime (at least one!) and give a sense of satisfaction when in use. This is no exception. Makes everything during setup easier, and provides accurate, repeatable measurements. ## Frequently Bought Together - FretGuru String Action Gauge Guitar Fret Ruler Precision Fret Rocker Precise CNC Machined, Diamond Honed, Polished Edge Guitar String Height Gauge Luthier Tool with Thick Leather Case - Guitar Neck Rest, Guitar Neck Cradle Support Pillow String Instrument Luthier Tool for Guitar Workstation, Ukuleles, Violins, Banjos, Mandolins - iLuiz Guitar Neck Notched Straight Edge Luthiers Tool for Gibson Fender and Most of Guitar Fretboard and Frets --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/5601619-fretguru-string-action-gauge-guitar-fret-ruler-precision-fret-rocker](https://www.desertcart.vu/products/5601619-fretguru-string-action-gauge-guitar-fret-ruler-precision-fret-rocker) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-16*