---
product_id: 489657589
title: "Forever-Direct String Action Gauge Ruler, Guitar Set Up Tool Kit for Electric Bass and Acoustic Guitar"
brand: "fematin"
price: "€ 32.86"
currency: EUR
in_stock: true
reviews_count: 5
category: "Fematin"
url: https://www.desertcart.fi/products/489657589-forever-direct-string-action-gauge-ruler-guitar-set-up-tool
store_origin: FI
region: Finland
---

# Multi-instrument compatibility Precision scales down to 0.01in/0.25mm Durable stainless steel build Forever-Direct String Action Gauge Ruler, Guitar Set Up Tool Kit for Electric Bass and Acoustic Guitar

**Brand:** fematin
**Price:** € 32.86
**Availability:** ✅ In Stock

## Summary

> 🎸 Tune Like a Pro, Anywhere You Go!

## 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?** € 32.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/489657589-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

- • **Compact Powerhouse:** Pocket-sized and lightweight, so you can tune and tweak your instrument anywhere, anytime.
- • **Instant Reference Conversion:** Integrated conversion chart at the 12th fret scale keeps your setup precise without second-guessing.
- • **Built to Last, Built to Impress:** Crafted from sleek stainless steel that combines durability with a professional aesthetic.
- • **Pinpoint Accuracy for Perfect Tone:** Measure string height, saddle slot depth, and nut saddles with ultra-fine increments for flawless setup.
- • **Universal Fit for All Your Strings:** Designed for electric guitars, basses, acoustics, mandolins, and banjos—one tool to rule them all.

## Overview

The Forever-Direct String Action Gauge Ruler is a stainless steel, pocket-sized precision tool designed for professional-grade setup of electric guitars, basses, acoustics, mandolins, and banjos. Featuring finely graduated scales for string height, saddle slot depth, and nut saddles, plus a handy conversion chart, it ensures accurate adjustments on the go with durable, sleek construction.

## Description

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

Review: excellent value. Metric too!
Review: Nice and shockingly durable. It did exactly as advertised. and I was able to set up and tune my guitar with ease especially because the printing on it made reading the measurements a piece of cake. Its got a decent weight to it considering it's size which is actually a very good thing.

## Features

- Made of stainless steel which is stable,durable,beautiful and widely used
- With scale 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
- Fit for electric guitar, Bass , acoustic guitar,mandolin,banjo,etc
- Convenient ,pocket-sized ruler which can take to everywhere you like

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08GKXLHY1 |
| Best Sellers Rank | 139,304 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 4,832 in Bass Guitar & Gear Accessories |
| Body Material | stainless steel |
| Colour | sliver |
| Customer Reviews | 4.5 4.5 out of 5 stars (977) |
| Date First Available | 24 Aug. 2020 |
| Item Weight | 18 g |
| 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)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***S on 8 December 2024*

excellent value. Metric too!

### ⭐⭐⭐⭐⭐ Review
*by J***E on 29 January 2026*

Nice and shockingly durable. It did exactly as advertised. and I was able to set up and tune my guitar with ease especially because the printing on it made reading the measurements a piece of cake. Its got a decent weight to it considering it's size which is actually a very good thing.

### ⭐⭐⭐⭐⭐ Review
*by E***A on 5 February 2023*

Excelente herramienta para guitarras Las letras y números no se borran con el tiempo eso es muy importante

## 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

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**Shop now:** [https://www.desertcart.fi/products/489657589-forever-direct-string-action-gauge-ruler-guitar-set-up-tool](https://www.desertcart.fi/products/489657589-forever-direct-string-action-gauge-ruler-guitar-set-up-tool)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-14*