---
product_id: 103585605
title: "SIREN: String Action Gauge - Guitar Setup Ruler - Luthier Tool"
brand: "siren"
price: "€ 0.30"
currency: EUR
in_stock: false
reviews_count: 13
url: https://www.desertcart.gr/products/103585605-siren-string-action-gauge-guitar-setup-ruler-luthier-tool
store_origin: GR
region: Greece
---

# Multi-instrument compatibility Dual metric & imperial scales Laser-engraved precision markings SIREN: String Action Gauge - Guitar Setup Ruler - Luthier Tool

**Brand:** siren
**Price:** € 0.30
**Availability:** ❌ Out of Stock

## Summary

> 🎯 Nail your perfect string action setup every time — because your instrument deserves precision.

## Quick Answers

- **What is this?** SIREN: String Action Gauge - Guitar Setup Ruler - Luthier Tool by siren
- **How much does it cost?** € 0.30 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/103585605-siren-string-action-gauge-guitar-setup-ruler-luthier-tool)

## Best For

- siren enthusiasts

## Why This Product

- Trusted siren brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Setup Tool:** Perfectly measures string, bridge, nut, and pickup heights across guitars, basses, ukuleles, banjos, and mandolins.
- • **Compact & Lightweight:** Pocket-sized at just 11 grams and 0.30 mm thick — carry professional-grade accuracy anywhere.
- • **Instant Conversion Ready:** Built-in conversion chart from fractions to decimals to metric keeps your workflow seamless and efficient.
- • **Safe & Scratch-Free Design:** Rounded corners and smooth edges protect your prized instruments from damage during setup.
- • **Precision in Every Millimeter:** Laser-engraved stainless steel ensures measurements that never fade or wear off.

## Overview

The SIREN String Action Gauge is a premium, laser-engraved stainless steel tool designed for precise measurement and adjustment of string height, bridge height, nut slot depth, and pickup height on multiple stringed instruments. Its compact, scratch-safe design and dual metric/imperial scales with a built-in conversion chart make it an essential, durable accessory for both professional luthiers and passionate musicians aiming for flawless instrument setups.

## Description

The SIREN String Action gauge is an essential tool for setting up and repairing a variety of stringed instruments, including Guitar, Bass, Banjo, Ukulele and Mandolin. Three individual scales in both Inches and Millimeters allow you to measure and adjust:- String Height- Bridge Height- Nut Slot Depth- Bridge Slot Depth- Pickup heightThe Siren String Action Gauge uses laser engraving on the stainless-steel tool to ensure the measurements and scales do not wear off with repeated use. This process guarantees precision and accuracy. The quality of our product speaks for itself. This is unlike other String Action Gauges available, as most of the available gauges uses a silk-screening technology, which has a tendency to wear with use.The SIREN String action gauge has a 0.30 mm thickness, smooth edges and rounded corners, these key features prevent scratching and damage to your instrument. Unlike many other String Action Gauges which have thin, sharp edges, as well as sharp pointed corners risking damage to your instrument.Whether you are experienced in guitar repair, or a hobbyist who prefers to set up your instrument at home. The SIREN String Action Gauge is the perfect tool to quickly, safely and accurately set up and adjust all stringed instruments.   Dimensions: 86mm x 54mm x 0.30mm / 3.38in x 2.12in x 0.012in (L x H x W) Weight: 11 grams

## Features

- MULTIPLE APPLICATIONS: Measures String Height, Bridge Height, Saddle Slot Depth, Nut Slot Depth and Pickup Height on a variety of stringed instruments including Guitar, Bass, Ukulele, Banjo and Mandolin.
- NO SHARP EDGES: The SIREN String Action Gauge has a small, lightweight, pocket-sized design with a 0.30 mm thickness. Rounded corners and smooth finished edges ensure your instrument will be safe from scratches and damage.
- METRIC & IMPERIAL: Includes measurements in both Inches and Millimeters. Equipped with a convenient Conversion Chart printed on the rear side of the Gauge. Providing Fraction (Inches) to Decimal (Inches) to Metric (Millimeters) conversions.
- PRECISE MEASUREMENTS: The engraved white measurements/scales on the matte black card provide an excellent contrast to the instrument strings. This contrast makes the measurements very easy to read, ensuring that your measurements are always highly accurate.
- EXCEPTIONAL QUALITY: The SIREN String Action Gauge is made from high-quality matte black Stainless Steel. The scales and charts are laser engraved into the stainless steel ensuring the measurements are precise and will not wear off. Allowing you to enjoy the product for years to come.

## Images

![SIREN: String Action Gauge - Guitar Setup Ruler - Luthier Tool - Image 1](https://m.media-amazon.com/images/I/61MpNpnOy5L.jpg)
![SIREN: String Action Gauge - Guitar Setup Ruler - Luthier Tool - Image 2](https://m.media-amazon.com/images/I/61Wr8qtVsLL.jpg)
![SIREN: String Action Gauge - Guitar Setup Ruler - Luthier Tool - Image 3](https://m.media-amazon.com/images/I/61iXYZw00UL.jpg)
![SIREN: String Action Gauge - Guitar Setup Ruler - Luthier Tool - Image 4](https://m.media-amazon.com/images/I/71Gwk1U8r7L.jpg)
![SIREN: String Action Gauge - Guitar Setup Ruler - Luthier Tool - Image 5](https://m.media-amazon.com/images/I/61P4KAP2HhL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    This is actually a really nice alternative to the more expensive options
  

*by G***M on Reviewed in the United States on July 3, 2019*

This is a nicely built product. The markings are Laser etched, not printed. The aluminum is fairly thick--thick enough--and serves well for its purpose. The markings are accurate as far as I can tell. I don't have a caliper or any fine measuring tools but a comparison to a good, proven accurate Stainless Steel ruler I've had for a long time shows the accuracy on this string action gauge as right-on. I like that the body is black and the markings silver because they are easy to read. I don't regret buying this item--it's a very good value.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Quality and accurate tool!
  

*by C***. on Reviewed in the United States on March 24, 2019*

Pros:- Black tool with silver markings allows you to easily to distinguish the strings from the tool. I've not seen this feature on any other gauge.- Gradients seem to be dead-on, and the conversion chart is a nice plus.- Rounded corners: I wouldn't buy a tool of this kind without them. Sharp corners make it too easy to damage fret boards, strings, and your fingers!- Ability to use short or long ends for similar types of measurements, no problems getting into tight places.- Extremely thin and lightweight, yet surprisingly rigid and sturdy.Cons:- The storage bag won't last long, it's even thinner than the bag the product is delivered in. No biggie there, I just slid it into a little credit card sheath I had laying around.Summary:There's no way you can go wrong with this product, especially for the money. I'm totally delighted with the purchase, highly recommended, and 5 stars all the way!* Note: I strive to write concise reviews with honest opinions to assist you as a potential buyer, and receive no monetary compensation for doing so. If you've found this information useful, I'd appreciate a click on the “Helpful” button below. Thanks!

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    A good tool for guitar setup
  

*by D***G on Reviewed in the United States on April 21, 2019*

It can be difficult to properly set neck relief, string height, pickup height, and bridge height on a guitar. This tool makes it a lot easier and is a time saver. The gauge is well marked and easy to read... as long as you have good light. In fact, that is my only quibble with the gauge... it is a bit difficult to distinguish the white on black markings when measuring hundreths of an inch since the shadow of the string makes it somewhat difficult to see clearly. This is easily corrected with a bright light, but it can be difficult to position a light in just the right location when both hands are busy holding the guitar and strings in position. With that said, I would recommend this product.

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-03-06*