---
title: "string action gauge — Niche Verdict: Skip it (42/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/musical-instruments/string-action-gauge"
last_updated: "2026-07-09T21:41:01.819Z"
locale: en
meta:
  description: "a small market ($185K/yr) — string action gauge doesn't clear our bar today."
  "og:description": "a small market ($185K/yr) — string action gauge doesn't clear our bar today."
  "og:title": "string action gauge — Niche Verdict: Skip it (42/100) | Amazon United States - Flapen"
---

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# **string action gauge**

**Skip it****42/100 **

a small market ($185K/yr) — string action gauge doesn't clear our bar today.

**Market/yr**

**$185K**

**Growth (1y)**

**+177.3%**

**Products**

**13**

**Brands**

**11**

was 16 a year ago

**Sellers**

**31**

**Price range**

**$4.47–$37.62**

**Returns**

**0.8%**

**Rating**

**4.7★**

**Skip it**

Scored 42/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns

Market size

**9**

 ×0.30

Growth

**74**

 ×0.30

Competition

**27**

 ×0.20

Quality gap

**20**

 ×0.10

Returns

**94**

 ×0.10

## **Demand**

Weekly Amazon search volume, last 104 weeks — +177.3% year over year.

5K3KSpike '25Prime Day '25Black Friday '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26

## **Seasonality**

Monthly demand index across the year — 1.00 is average.

JFMAMJJASOND

Peak months: Jan · busiest ÷ quietest = 1.9×

## **Competition**

- Junlego30% - Kayoubi16% - MusicNomad13% - D'Addario10% - Msuhettu6% - FretGuru6% - Other (5 brands)19%

The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack. 11 brands and 31 sellers compete here.

**Brands**

**11 **▼falling

was 16 a year ago

**Sellers**

**31**

**Top 5 brand share**

**76%**

#ProductBrandPriceRatingReviewsClick shareTrend

1
![Guitar Action Gauge Ruler String Height Gauge for Guitar](https://m.media-amazon.com/images/I/41ZrcY3OLYL.jpg) [**Guitar Action Gauge Ruler String Height Gauge for Guitar**](https://www.amazon.com/dp/B0CYXZSQ8B)

Junlego$6.284.8★64230%▼falling

2
![Guitar Accessories String Action Gauge High Contrast Black Luthier Set up Tools with Dual Metric & Imperial Scales Smooth Edges & Protective PU Case for Acoustic Electric Guitars & Bass](https://m.media-amazon.com/images/I/5144Po2xI7L.jpg) [**Guitar Accessories String Action Gauge High Contrast Black Luthier Set up Tools with Dual Metric & Imperial Scales Smooth Edges & Protective PU Case for Acoustic Electric Guitars & Bass**](https://www.amazon.com/dp/B0F3CL3QJG)

Kayoubi$5.494.8★24516%▲rising

3
![DAddario Accessories String Height Gauge](https://m.media-amazon.com/images/I/31QV05GVSBL.jpg) [**DAddario Accessories String Height Gauge**](https://www.amazon.com/dp/B07B8RPD33)

D'Addario$10.724.5★50110%▼falling

4
![MusicNomad Precision String Action Gauge Ruler for String Height- Metric SAE 64ths (MN602)](https://m.media-amazon.com/images/I/41VD2iRBC1L.jpg) [**MusicNomad Precision String Action Gauge Ruler for String Height- Metric SAE 64ths (MN602)**](https://www.amazon.com/dp/B08M45Y4VZ)

MusicNomad$18.034.8★1,06010%▼falling

5
![String Action Gauge Ruler Upgraded Guitar String Height Gauge with Inch & Metric Scales Guitar String Setup Tool and Accessory for Electric Acoustic Bass and Luthier Use - Print Silver Edition](https://m.media-amazon.com/images/I/41FKvqYFlhL.jpg) [**String Action Gauge Ruler Upgraded Guitar String Height Gauge with Inch & Metric Scales Guitar String Setup Tool and Accessory for Electric Acoustic Bass and Luthier Use - Print Silver Edition**](https://www.amazon.com/dp/B0F9YK1S3F)

Msuhettu$4.474.6★1506%—flat

6
![String Action Gauge for Guitars - Precision Setup Tool to Play Your Best - Guitar String Height Gauge - String Action Ruler with Easy-to-Read Markings](https://m.media-amazon.com/images/I/51lTQIV0hPL.jpg) [**String Action Gauge for Guitars - Precision Setup Tool to Play Your Best - Guitar String Height Gauge - String Action Ruler with Easy-to-Read Markings**](https://www.amazon.com/dp/B0F2GYLTL2)

Powered By Rock$9.194.8★785%▼falling

7
![StewMac String Action Gauge And Ruler Inches Stainless Steel - Designed by StewMac The Original measuring tool for acoustic and electric guitar and bass setup](https://m.media-amazon.com/images/I/41+c-ddrj-L.jpg) [**StewMac String Action Gauge And Ruler Inches Stainless Steel - Designed by StewMac The Original measuring tool for acoustic and electric guitar and bass setup**](https://www.amazon.com/dp/B01HUCS3YA)

StewMac$35.574.7★1765%▲rising

8
![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](https://m.media-amazon.com/images/I/51Iz2cyG4aL.jpg) [**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**](https://www.amazon.com/dp/B00HG29EYI)

FretGuru$29.104.8★2,0144%▲rising

9
![String Action Gauge Ruler Guitar Height Gauge Set Up Tool for Electric Bass and Acoustic Guitar](https://m.media-amazon.com/images/I/41jkCI-e1uL.jpg) [**String Action Gauge Ruler Guitar Height Gauge Set Up Tool for Electric Bass and Acoustic Guitar**](https://www.amazon.com/dp/B08GKXLHY1)

myKimono$6.124.5★1,0474%—flat

10

![MusicNomad Truss Rod Gauge & String Action Gauge Combo Bundle (MN614)](https://m.media-amazon.com/images/I/51qL-kntd-L.jpg) [**MusicNomad Truss Rod Gauge & String Action Gauge Combo Bundle (MN614)**](https://www.amazon.com/dp/B08NFM9S89)

MusicNomad$29.964.7★5434%—flat

11

![Dunlop Action Gauge System 65 Guitar Tools](https://m.media-amazon.com/images/I/417j1dy2daL.jpg) [**Dunlop Action Gauge System 65 Guitar Tools**](https://www.amazon.com/dp/B07QMMH5WZ)

Dunlop$15.454.7★1,3222%▼falling

12

![String Action Gauge Ruler Professional Guitar Setup Tool with Dual mm & 1/64 Scales - for Electric Acoustic Bass Guitars - Includes Measurement Chart & Protective Sleeve - Print Silver Edition](https://m.media-amazon.com/images/I/31s931-4CFL.jpg) [**String Action Gauge Ruler Professional Guitar Setup Tool with Dual mm & 1/64 Scales - for Electric Acoustic Bass Guitars - Includes Measurement Chart & Protective Sleeve - Print Silver Edition**](https://www.amazon.com/dp/B0FVS2WF6L)

FAITIO$7.034.6★322%▲rising

13

![FretGuru XT Guitar String Action Gauge Pro Fret Rocker Bridge & Pickup Spacing Ruler Advanced Ultra-Precision MOAGG Technology Guitar Setup Tool for Luthiers with Fret Height/Fret Wear Checker](https://m.media-amazon.com/images/I/51K-rSbBCjL.jpg) [**FretGuru XT Guitar String Action Gauge Pro Fret Rocker Bridge & Pickup Spacing Ruler Advanced Ultra-Precision MOAGG Technology Guitar Setup Tool for Luthiers with Fret Height/Fret Wear Checker**](https://www.amazon.com/dp/B0F63PTPR4)

FretGuru$37.624.8★682%▼falling

## **Product shelf**

All 13 tracked products in this niche.

Top sellersNewestTrending

[![Guitar Action Gauge Ruler String Height Gauge for Guitar](https://m.media-amazon.com/images/I/41ZrcY3OLYL.jpg)**Guitar Action Gauge Ruler String Height Gauge for Guitar** Junlego**$6.28**4.8★642 reviews](https://www.amazon.com/dp/B0CYXZSQ8B) [![Guitar Accessories String Action Gauge High Contrast Black Luthier Set up Tools with Dual Metric & Imperial Scales Smooth Edges & Protective PU Case for Acoustic Electric Guitars & Bass](https://m.media-amazon.com/images/I/5144Po2xI7L.jpg)**Guitar Accessories String Action Gauge High Contrast Black Luthier Set up Tools with Dual Metric & Imperial Scales Smooth Edges & Protective PU Case for Acoustic Electric Guitars & Bass** Kayoubi**$5.49**4.8★245 reviews](https://www.amazon.com/dp/B0F3CL3QJG) [![DAddario Accessories String Height Gauge](https://m.media-amazon.com/images/I/31QV05GVSBL.jpg)**DAddario Accessories String Height Gauge** D'Addario**$10.72**4.5★501 reviews](https://www.amazon.com/dp/B07B8RPD33) [![MusicNomad Precision String Action Gauge Ruler for String Height- Metric SAE 64ths (MN602)](https://m.media-amazon.com/images/I/41VD2iRBC1L.jpg)**MusicNomad Precision String Action Gauge Ruler for String Height- Metric SAE 64ths (MN602)** MusicNomad**$18.03**4.8★1,060 reviews](https://www.amazon.com/dp/B08M45Y4VZ) [![String Action Gauge Ruler Upgraded Guitar String Height Gauge with Inch & Metric Scales Guitar String Setup Tool and Accessory for Electric Acoustic Bass and Luthier Use - Print Silver Edition](https://m.media-amazon.com/images/I/41FKvqYFlhL.jpg)**String Action Gauge Ruler Upgraded Guitar String Height Gauge with Inch & Metric Scales Guitar String Setup Tool and Accessory for Electric Acoustic Bass and Luthier Use - Print Silver Edition** Msuhettu**$4.47**4.6★150 reviews](https://www.amazon.com/dp/B0F9YK1S3F) [![String Action Gauge for Guitars - Precision Setup Tool to Play Your Best - Guitar String Height Gauge - String Action Ruler with Easy-to-Read Markings](https://m.media-amazon.com/images/I/51lTQIV0hPL.jpg)**String Action Gauge for Guitars - Precision Setup Tool to Play Your Best - Guitar String Height Gauge - String Action Ruler with Easy-to-Read Markings** Powered By Rock**$9.19**4.8★78 reviews](https://www.amazon.com/dp/B0F2GYLTL2) [![StewMac String Action Gauge And Ruler Inches Stainless Steel - Designed by StewMac The Original measuring tool for acoustic and electric guitar and bass setup](https://m.media-amazon.com/images/I/41+c-ddrj-L.jpg)**StewMac String Action Gauge And Ruler Inches Stainless Steel - Designed by StewMac The Original measuring tool for acoustic and electric guitar and bass setup** StewMac**$35.57**4.7★176 reviews](https://www.amazon.com/dp/B01HUCS3YA) [![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](https://m.media-amazon.com/images/I/51Iz2cyG4aL.jpg)**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** FretGuru**$29.10**4.8★2,014 reviews](https://www.amazon.com/dp/B00HG29EYI)

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Quality-Overall**24%

*“Excellent Quality”*

**Ease Of Use**15%

*“Easy to use”*

**Value For Money**11%

*“Great price”*

**Advertised Vs Actual Product**9%

*“Works as advertised”*

**Strap/String Quality**9%

*“The string action is very easy to measure using this tool”*

**Tune Retention**5%

*“High quality, with many useful features for accurately setting up guitars”*

**Strength**3%

*“Solid Product”*

**Metal Quality**3%

*“It's made of quality steel”*

**Durability**3%

*“Very durable also”*

**Leather Quality**2%

*“Talking with a nice faux leather case”*

### **What buyers complain about **

**Bass**20%

*“Beware, however, it does not work for bass guitar”*

**Value For Money**15%

*“too expensive”*

**Advertised Vs Actual Product**10%

*“Did not come with the pictured soft pouch”*

**Brightness/Shine/Glow**8%

*“Instead of shiny, glaring, reflective metal with difficult to make out black lines, this is matte black with easy to see white lines”*

**Ease Of Use**5%

*“Hard to read”*

**Color**5%

*“The color starts to fade a bit after use”*

**Instructions/User Manual/Troubleshooting**5%

*“Could have more instructions and included”*

**Metal Quality**3%

*“the stainless it is made from is stiff”*

**Durability**3%

*“concerned about longevity”*

#### **Top return reasons**- Value For Money25% - Advertised Vs Actual Product16% - Size-Overall13% - Functionality-Overall11% - Accuracy-Overall8% - Defective Material/Parts5% - Material Quality5% - Product Condition4% - Compatibility-Overall3% - Quality-Overall3%