--- product_id: 387439733 title: "Forever-Direct String Action Gauge Ruler, Guitar Set Up Tool Kit for Electric Bass and Acoustic Guitar" brand: "fematin" price: "Β£12.71" currency: GBP in_stock: true category: "Fematin" url: https://www.desertcart.co.uk/products/387439733-forever-direct-string-action-gauge-ruler-guitar-set-up-tool store_origin: GB region: United Kingdom --- # Universal fit for 5+ string instruments Multi-scale measurement (mm/inch) Precision stainless steel gauge Forever-Direct String Action Gauge Ruler, Guitar Set Up Tool Kit for Electric Bass and Acoustic Guitar **Brand:** fematin **Price:** Β£12.71 **Availability:** βœ… In Stock ## Summary > 🎸 Tune Like a Pro, Play Like a Legend ## Quick Answers - **What is this?** Forever-Direct String Action Gauge Ruler, Guitar Set Up Tool Kit for Electric Bass and Acoustic Guitar by fematin - **How much does it cost?** Β£12.71 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/387439733-forever-direct-string-action-gauge-ruler-guitar-set-up-tool) ## Best For - fematin enthusiasts ## Why This Product - Trusted fematin brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Pro-Level Setup:** Includes clear instructions to help you achieve professional-grade string height and saddle depth adjustments. - β€’ **Pocket-Sized Power:** Compact and lightweight, this tool fits in your pocket so you can tune and tweak anywhere, anytime. - β€’ **Multi-Scale Mastery:** Dual metric and imperial scales with conversion chart streamline your string action adjustments effortlessly. - β€’ **Precision Perfected:** Stainless steel construction ensures durability and exact measurements for flawless guitar setup. - β€’ **Versatile Compatibility:** Designed for electric, bass, acoustic guitars, mandolins, banjos, and moreβ€”one tool to rule them all. ## Overview The Forever-Direct String Action Gauge Ruler is a precision stainless steel tool designed for professional and amateur musicians alike. It features dual metric and imperial scales, a built-in conversion chart, and fits a wide range of string instruments including electric, bass, acoustic guitars, mandolins, and banjos. Compact and durable, it enables accurate string height, saddle slot depth, and nut adjustments for perfect playability wherever you go. ## Description Setting up your guitar and make it sound more beautiful. HOW TO USE? 1.Tune your guitar. This ensures the right tension is applied to the neck. 2.Make sure your neck is straight and adjust your truss rod needed. 3.Rest the ruler or string action gauge tool on the 12th fret. 4.Read the ruler from the bottom of the string. 5.Repeat this for any other string on your guitar you need to measure. Features: 1.Fit for electric guitar, Bass , acoustic guitar,mandolin,banjo,etc. 2.With conversion chart of string action at 12th fret printed on one side. 3.With scale for string height, for ridge saddle slot depth and for nuts saddles and pole pieces. 4.Made of stainless steel which is stable,durable,beautiful and widely used. 5.From inch fractions, to inch decimals, to metric in increments. Specifications: Material: Stainless Steel Color: sliver Application: electric guitar, bass , acoustic guitar etc. Unit: mm/ in Scale for string height: 0.01-0.14in / 0.25-3.50mm Scale for bridge saddle slot depth: 0-0.875in / 0-20mm Scale for nuts saddles and polepieces: 0-0.75in / 0-20mm Ruler size: 8.9 * 5.1cm / 3.5 * 2in (length * width) Ruler weight: 28g / 0.99oz Package including: 1 x String action ruler 1 x Instruction paper card. TIPS: Properly setting up your truss rod is crucial to get right before you adjust your guitar’s action. ## Features - Made of stainless steel which is stable,durable,beautiful and widely used - Guitar gauge for string height, for ridge saddle slot depth and for nuts saddles and pole pieces - With conversion chart of string action at 12th fret printed on one side - Guitar ruler fit for electric guitar, Bass , acoustic guitar,mandolin,banjo,etc - Handy Luthier Tool-Convenient ,pocket-sized ruler which can take to everywhere you like.Package including: 1 x String action gauge, 1 x Instruction ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08GKXLHY1 | | Body Material | Stainless-Steel | | Color Name | sliver | | Customer Reviews | 4.5 4.5 out of 5 stars (989) | | Date First Available | 22 September 2020 | | Item Weight | 18 g | | Material Type | Stainless Steel | | Product Dimensions | 8.89 x 5.08 x 1.02 cm; 18 g | ## Images ![Forever-Direct String Action Gauge Ruler, Guitar Set Up Tool Kit for Electric Bass and Acoustic Guitar - Image 1](https://m.media-amazon.com/images/I/616yyNR6fML.jpg) ![Forever-Direct String Action Gauge Ruler, Guitar Set Up Tool Kit for Electric Bass and Acoustic Guitar - Image 2](https://m.media-amazon.com/images/I/61gZO21bORL.jpg) ![Forever-Direct String Action Gauge Ruler, Guitar Set Up Tool Kit for Electric Bass and Acoustic Guitar - Image 3](https://m.media-amazon.com/images/I/5193mZa93WL.jpg) ![Forever-Direct String Action Gauge Ruler, Guitar Set Up Tool Kit for Electric Bass and Acoustic Guitar - Image 4](https://m.media-amazon.com/images/I/71iCQC2vCbL.jpg) ![Forever-Direct String Action Gauge Ruler, Guitar Set Up Tool Kit for Electric Bass and Acoustic Guitar - Image 5](https://m.media-amazon.com/images/I/51PaYKT-Q9L.jpg) ## Frequently Bought Together - String Action Gauge Ruler, Guitar Height Gauge Set Up Tool for Electric Bass and Acoustic Guitar - D'Addario Accessories Pro-Winder Guitar String Winder, Cutter, Bridge Pin Puller - All in One Guitar Tool - Black - Guitar Neck Rest, Guitar Neck Cradle Support Pillow String Instrument Luthier Tool for Guitar Workstation, Ukuleles, Violins, Banjos, Mandolins --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/387439733-forever-direct-string-action-gauge-ruler-guitar-set-up-tool](https://www.desertcart.co.uk/products/387439733-forever-direct-string-action-gauge-ruler-guitar-set-up-tool) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-25*