---
product_id: 525261205
title: "Onwon Set of 9 Understring Radius Gauge Luthier Tools and 32 Blades Feeler Gauge Dual Marked Metric & Imperial Gap Measuring Rulers Tool for Guitar and Bass Bridge Saddle Adjustments"
brand: "onwon"
price: "¥11770"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/525261205-onwon-set-of-9-understring-radius-gauge-luthier-tools-32
store_origin: JP
region: Japan
---

# 9 precision radius gauges 32 hardened steel feeler blades Dual metric & imperial markings Onwon Set of 9 Understring Radius Gauge Luthier Tools and 32 Blades Feeler Gauge Dual Marked Metric & Imperial Gap Measuring Rulers Tool for Guitar and Bass Bridge Saddle Adjustments

**Brand:** onwon
**Price:** ¥11770
**Availability:** ✅ In Stock

## Summary

> 🎸 Tune like a pro, measure like a maestro!

## Quick Answers

- **What is this?** Onwon Set of 9 Understring Radius Gauge Luthier Tools and 32 Blades Feeler Gauge Dual Marked Metric & Imperial Gap Measuring Rulers Tool for Guitar and Bass Bridge Saddle Adjustments by onwon
- **How much does it cost?** ¥11770 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/525261205-onwon-set-of-9-understring-radius-gauge-luthier-tools-32)

## Best For

- onwon enthusiasts

## Why This Product

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

## Key Features

- • **Ergonomic & Portable:** Foldable feeler gauge with thumb-notch blade protector for effortless blade removal and on-the-go adjustments.
- • **Ultimate Gap Accuracy:** 32 hardened, lube-coated feeler blades ensure corrosion-free, exact saddle and string height measurements.
- • **Dual-Scale Convenience:** Metric and imperial etched markings let you switch seamlessly between measurement systems without guesswork.
- • **Precision Radius Mastery:** 9 stainless steel gauges cover all popular fretboard curves from 7.25" to 20" for flawless setup.
- • **Versatile Luthier Essential:** Perfect for electric, acoustic, and bass guitars—measure fret height, neck deformation, and bridge saddle alignment like a pro.

## Overview

The Onwon Set combines 9 stainless steel understring radius gauges with 32 dual-marked feeler blades, delivering precise fretboard and saddle measurements for all guitar types. Engineered for durability and ease, this toolset is essential for professional-grade guitar and bass maintenance.

## Description

Onwon Set of 9 Understring Radius Gauge Luthier Tools and 32 Blades Feeler Gauge Dual Marked Metric & Imperial Gap Measuring Rulers Tool for Guitar and Bass Bridge Saddle Adjustments 9 Understring Radius Gauge Specifications:  including 7.25", 9.5", 10", 12", 14", 15", 16", 17" and 20" radiusMaterial: Stainless Steel. Understring Radius Gauge: 9 pieces.32 Blades Feeler Gauge Specifications:  Metric sizes (mm): 0.04, 0.05, 0.06, 0.08, 0.10, 0.13, 0.15, 0.18, 0.20, 0.23, 0.25, 0.25, 0.28, 0.30, 0.33, 0.35, 0.38, 0.40, 0.43, 0.45, 0.48, 0.50, 0.53, 0.55, 0.58, 0.60, 0.63, 0.65, 0.70, 0.75, 0.80, 0.88Inch sizes: 0.0015, 0.002, 0.0025, 0.003, 0.004, 0.005, 0.006, 0.007, 0.008, 0.009, 0.010, 0.010, 0.011, 0.012, 0.013, 0.014, 0.015, 0.016, 0.017, 0.018, 0.019, 0.020, 0.021, 0.022, 0.023, 0.024, 0.025, 0.026, 0.028, 0.030, 0.032, 0.035Material: Hardened Tempered Steel. Blades: 32 pieces.Package includes: 1 Set of 32 blades feeler gauge 1 Set of understring radius gauge

## Features

- 9 Understring radius gauge: including 7.25", 9.5", 10", 12", 14", 15", 16", 17" and 20" radius, can be applied to accurately measure fret board radius, saddle radius nut radius from either the top or the bottom radius surface, made of stainless steel, a must have for bass guitar maintain and adjustment
- 32 Blades feeler gauge: constructed from hardened tempered steel with a lube oil coating to prevent pitting and corrosion, each measuring feeler gauge has 32 blades thickness; Foldable feeler gauges, easy and convenient to take and store
- Easy identification: dual marked metric and imperial, 0.0015 inch/ 0.04 mm to 0.035 inch/ 0.88 mm, the numbers of size are etched into feeler gauge for easy identification. The blade protector has a thumb notch to aid in removal of blades,designed for easy using.
- These come in the most popular fingerboard radius and make it easy to measure the radius from either above or below the strings. Obtain accurate measurements of your instrument's fretboard radius using the bottom radius of the gauge. Then use the matching top radius of this gauge to determine the proper height adjustment for the bridge saddles.
- Wide application: the guitar measure tool can be applied for measure the height of fret and strings，sound pick-up and strings, and the unevenness of the fret, level of fingerboard, width of pillow on the groove, deformation degree of the guitar neck. Can be applied to measure all kinds of electric guitar, electric bass, acoustic guitar, acoustic guitar, electric box guitar fretboard measured in radians, radians to adjust the strings piano code

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Onwon |
| Manufacturer | Onwon |
| Package Dimensions | 14.2 x 10.4 x 1.4 cm; 100 g |
| Batteries Included | No |
| Batteries Required | No |
| Material | Stainless Steel |
| Includes AC Adapter | No |
| Manufacturer | Onwon |
| Country of Origin | USA |
| Item Weight | 100 g |

## Product Details

- **Brand:** Onwon
- **Material:** Stainless Steel
- **Range:** 0.04 mm - 0.88 mm, 0.0015 inch - 0.035 inch millimeters, inches
- **Manufacturer:** Onwon

## Images

![Onwon Set of 9 Understring Radius Gauge Luthier Tools and 32 Blades Feeler Gauge Dual Marked Metric & Imperial Gap Measuring Rulers Tool for Guitar and Bass Bridge Saddle Adjustments - Image 1](https://m.media-amazon.com/images/I/61F++L5ac8L.jpg)
![Onwon Set of 9 Understring Radius Gauge Luthier Tools and 32 Blades Feeler Gauge Dual Marked Metric & Imperial Gap Measuring Rulers Tool for Guitar and Bass Bridge Saddle Adjustments - Image 2](https://m.media-amazon.com/images/I/51oxopVb1TL.jpg)
![Onwon Set of 9 Understring Radius Gauge Luthier Tools and 32 Blades Feeler Gauge Dual Marked Metric & Imperial Gap Measuring Rulers Tool for Guitar and Bass Bridge Saddle Adjustments - Image 3](https://m.media-amazon.com/images/I/6114Jdtxp6L.jpg)
![Onwon Set of 9 Understring Radius Gauge Luthier Tools and 32 Blades Feeler Gauge Dual Marked Metric & Imperial Gap Measuring Rulers Tool for Guitar and Bass Bridge Saddle Adjustments - Image 4](https://m.media-amazon.com/images/I/61Pg4ZenciL.jpg)
![Onwon Set of 9 Understring Radius Gauge Luthier Tools and 32 Blades Feeler Gauge Dual Marked Metric & Imperial Gap Measuring Rulers Tool for Guitar and Bass Bridge Saddle Adjustments - Image 5](https://m.media-amazon.com/images/I/51IUCdY+L4L.jpg)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-22*