Best Radius Gauges 2026

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Last Updated - 22.07.2026

Best Choice

01

MusicNomad

MusicNomad MN603 Precision Fretboard and String Radius Gauge Tool Set of 2

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9.7

Exceptional

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Main highlights

This gauge is part of our KEEP IT SIMPLE, SETUP (KISS) method with our precision gauges & tool sets
The premium stainless steel with polished, smooth edges combined with laser engraved numbers and texts guarantees years of use
Precision radius gauge set with 7.25", 9.5", 10", 12", 14", 15", 16", 20" precision measurements
Measures fretboard radius and string radius on electric, acoustic and bass guitars
Innovative black finish makes it easier to see if the strings touch, and the instructions etched into the gauge take the guesswork out of the way

20,90 €
Value for Money

02

HISUEKIG

HISUEKIG Guitar Tool Set, Stainless Steel Guitar Tools with Sander Radius Gauge, String Action Ruler and Fingerboard Protection, Complete Tool Kit for Electric Guitar, Bass, Banjo, Mandolin

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9.6

Exceptional

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Main highlights

Versatile Use This comprehensive guitar tools are suitable for a variety of string instruments, including electric guitar, bass, banjo and mandolin, and meets the requirements of musicians of all skill levels.
PREMIUM STAINLESS STEEL MATERIAL The guitar tools are made of high quality stainless steel to ensure durability as well as resistance to rust and corrosion - ideal as a durable tool for guitar enthusiasts.
Easy Operation: With full guitar tools tools, users can easily perform on their instruments, which is a convenient solution for professional musicians and hobbyists.
ESSENTIAL FOR GUITAR ENVIRONMENTS Whether you need to adjust the action, change strings or fine tune your instrument, this guitar tool set has everything you need to keep your guitar in optimal playing condition.
ACCURATE MEASUREMENTS & ADJUSTMENTS This guitar repair kit allows accurate measurements and adjustments to string instruments, facilitating the process of string changing, pitch setting and string height testing.

16,99 €
03

GLARKS

Glarks 4 Pack R0.3-1.5/ R1-6.5/ R7-14.5/ R15-25 Radius Gauge Set, Stainless Steel Radius Fillet Gage Portable Concave Convex Measuring Tool for Tool and Die Makers Check

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9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

【What you get】: This radius gauge set includes 4 pieces radius rounding gauge, whose measuring ranges are R0.3-1.5mm, R1-6.5mm, R7-14.5mm, R15-25mm. They are well packaged in a plastic box, easy to carry and store.
【Measuring range detail】: R0.3-1.5mm is 0.3/0.4/0.5/0.6/0.7/0.8/0.9/1.0/1.1/1.2/1.3/1.4/1.5; R1-6.5mm is 1/1.25/1.5/1.75. / 2/ 2, 25/ 2.5/ 2.75/ 3/ 3.5/ 4/ 4.5/ 5/ 5.5/ 6/ 6.5; R7-14.5 mm is 7/ 7.5/ 8/ 8.5/ 9/ 9.5/ 10/ 10.5/ 11/ 11.5/ 12/ 12.5/ 13/ 13.13.5/ 14/ 14.5; R15-25 mm is 15/ 15.5/ 16/ 16.5/ 17/ 17.5/ 18/ 18.5/ 19/ 19.5/ 20/ 21/ 22/ 23/ 24/ 25.
【High Quality】: All radius gauges are made of high quality steel, heat treated with chrome finish, high strength, good resilience, elegant appearance. Surface polished smooth, apply rust protection oil to prevent rust and corrosion.
【Easy to use】: The radius gauge has two types of blades, each sheet is clearly marked, so you can conveniently tell which blade you need. So it can check the convex and concave surfaces. The convex pattern is used to detect the concave surface arc, and the concave template is used to recognize the convex surface arc.
【Application】: It can measure accurately and has no errors, help you check the radius of tools quickly and easily. There are four radium gauges in different shapes and sizes to meet your different needs. Very useful gauge for tool and mold makers, machinists, architects and others to check the radius of tools.

14,98 €
04

QWORK

QWORK® 4 pieces R0.3-1.5 / R1-6.5 / R7-14.5 / R15-25 stainless steel radius gauge fillet set, concave-convex measuring gauges with precision measurement

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide application: ideal for tool and mould making, machining and a variety of measuring needs in the professional and hobby sector.
VERSATILE MEASUREMENT RANGE Contains four gauges that cover ranges from R0.3-1.5mm to R15-25mm to meet different measuring needs.
PREMIUM MATERIAL & FINISH: Made of stainless steel and treated with a heat treated chrome finish, ensuring durability, corrosion resistance and a polished, smooth finish.
Enjoy a smooth and worry-free return service within one month. If you have any questions, please feel free to contact us, we are here for you.
DUAL FUNCTION SHEETS Equipped with two types of sheets for testing both convex and concave surfaces marked for easy identification to optimize tasks.

10,85 €
05

Helweet

Radius Gauge, Fillet Gauge, Radius Gauge, Radius Fillet Gauge, Radius Bar Made of Spring Alloy Steel Measuring Tool, Concave Convex Arc Radius Gauge, Pack of 2, R1-6.5 + R7-14.5

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8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Quantity and size: the 2-pack contains radius gauge in different shapes and sizes, whose measuring range is R1-6.5, R7-14.5. The distance of the arc measuring tubes is neatly stacked, the size is standard and it has a high precision measurement.
Material features: all radius gauges are made of spring alloy steel, high strength, good resilience, durable and rust resistant, which can meet different work requirements. Lightweight design, compact size, portable and practical
Easy to use: when used for engraving, each radius gauge is clearly marked so you can see the blade you need. When using, press the radian gauge on the notch to measure the radius of the object. The use is easy and convenient not to hurt your hands.
Concave convex measuring tool: This radius gauge has two types of blades that can be used to check both convex and concave surfaces. The convex pattern is used to detect the concave surface arc and the concave template to detect the convex surface arc
Application: very useful radius gauge for tool and mould makers, machinists and many other workers to check the radius of tools. Strict and fine workmanship ensures high precision and long service life

6,99 €
06

Helweet

Radius Gauge, Radius Gauge, Guitar Radius Gauge, Guitar Radius Gauge, Understring Radius Gauge, Radius Ruler Gauge, Bass Bridge Fingerboard Saddle, Radius String Gauge, 9 Pieces

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Widely used: electric guitar, electric bass, acoustic guitar, folk guitar, electric box guitar, fretboard arch measurement, strings and piano code bow adjustment, etc.
Versatile measurements: comes with a range of radius options, including 7.25, 9.5, 10, 12, 14, 15, 16, 17 and 20, for different guitar setups.
High-quality materials: made of durable and high-quality materials, which are durable and ensure reliability.
Easy to use: Designed for easy measurement of either above or below the strings, allows easy setup of the guitar bridge saddles.
Accurate measurement: Get accurate measurements of the fretboard radius of your instrument by using the lower radius of the meter. Allows easy and precise measurement of the fretboard radius of the guitar.

6,59 €
07

Flylin

Set of 4 Radius Gauge Measuring Tool, Alloy Radius Gauge Set, Stainless Steel Fillet Gage Concave Convex Gauge, Arc Radius Gauge Replacement R1-6.5/R7-14.5/R15-25/R26-80 for Concave and Convex Surfaces

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Versatile radius gauge set: 4-piece radius gauge set includes the sizes R1-6.5 mm is 1/1.25/1.5/1.75/2/2.25/2.5/2.75/3/3.5/4/4.5/5/5.5/6/6.5; R7-14.5 mm. is 7/ 7,5/ 8/ 8.5/ 9/ 9.5/ 10/ 10.5/ 11/ 11.5/ 12/ 12.5/ 13/ 13.5/ 14/ 14.5; R15-25mm is 15/ 15.5/ 16/ 16.5/ 17/ 17.5/ 18/ 18.5/ 19 19 .5/ 20/ 21/ 22/ 23/ 24/ 25; R26-80 mm is 26/ 27/ 28/ 29/ 30/ 32/ 36/ 40/ 46/ 50/ 55/ 60/ 65/ 70/ 75/ 80, making it an indispensable measuring tool for various applications - ideal for designers and Engineers engineengine
Precise measuring tools: each radius gauge has clearly marked blades that allow easy identification of the required size, ensuring precise measurements on both convex and concave surfaces
Ideal for DIY projects: this radius gauge set is perfect for installing machines, electrical devices and more and is suitable for measuring the thickness or width of screws, valves and bearings, making it an indispensable tool in any workshop
Easy to use: the bow gauge has a practical press notch for effortless and injury-free work. The robust alloy steel construction ensures long-lasting reliability in all measuring tasks
360 degree locking screw: our radius gauge set features a unique locking screw that allows easy opening and closing and thus improving portability and usability on the go

14,24 €
08

Zolara

Zolara 4 Stück Radienlehre, R0.3-1.5/ R1-6.5/ R7-14.5/ R15-25 Radiuslehre Set, Edelstahl-Radiusmessgeräte, Radius Gauge, Tragbares konkaves konvexes Radiusmessgerät Set, zum Messen des Radius

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8.4

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Produktbeschreibung: Dieses radienlehre und radiuslehre Set enthält vier radius gauge mit den Messbereichen R0,3–1,5 mm, R1–6,5 mm, R7–14,5 mm und R15–25 mm. Die Produkte sind sorgfältig in einer Kunststoffbox verpackt, was den Transport und die Aufbewahrung erleichtert – ein praktischesradius schablone set für alle Messaufgaben.
Hohe Qualität: Alle radienlehre sind aus hochwertigem Edelstahl gefertigt, zeichnen sich durch hohe Festigkeit und Belastbarkeit aus und haben ein elegantes Erscheinungsbild. Sie sind rostbeständig und langlebig, jeder einzelne radius Messer gewährleistet präzise Ergebnisse über lange Nutzungszeiten. Hinweis: gewindelehre ist nicht im Lieferumfang enthalten, das Set konzentriert sich auf radiuslehre Funktionen.
Einfache Bedienung: Dieser radius gauge und radiuslehre ist mit zwei radius template (Schablonen) ausgestattet, die jeweils deutlich gekennzeichnet sind, sodass Sie die gewünschte Schablone leicht erkennen können. Daher eignet er sich sowohl zur Prüfung von konvexen als auch von konkaven Oberflächen. Die konvexe radius template dient zur Prüfung der Krümmung konkaver Oberflächen, die konkave Schablone hingegen zur Prüfung der Krümmung konvexer Oberflächen – einfach zu bedienen, auch für Anfänger.
Details zum Messbereich: Die radienlehre mit Messbereich R0,3–1,5 mm umfasst 0,3/ 0,4/ 0,5/ 0,6/ 0,7/ 0,8/ 0,9/ 1,0/ 1,1/ 1,2/ 1,3/ 1,4/ 1,5; R1–6,5 mm: 1/ 1,25/ 1,5/ 1,75/ 2/ 2,25/ 2,5/ 2,75/ 3/ 3,5/ 4/ 4,5/ 5/ 5,5/ 6/ 6,5; R7–14,5 mm umfasst 7/ 7,5/ 8/ 8,5/ 9/ 9,5/ 10/ 10,5/ 11/ 11,5/ 12/ 12,5/ 13/ 13,5/ 14/ 14,5; R15–25 mm entspricht 15/ 15,5/ 16/ 16,5/ 17/ 17,5/ 18/ 18,5/ 19/ 19,5/ 20/ 21/ 22/ 23/ 24/ 25 – ein umfassendes radius schablone set für alle gängigen radius Messungen.
Anwendung: Die Messung mit dieser radienlehre ist präzise und fehlerfrei und ermöglicht Ihnen eine schnelle und einfache Überprüfung des Werkzeugradius. Es stehen vier verschiedene Formen und Größen des radius gauge zur Verfügung, um Ihren vielfältigen Anforderungen gerecht zu werden. Für Werkzeug- und Formenbauer, Mechaniker, Architekten und alle anderen, die den radius überprüfen müssen, ist dies ein äußerst praktisches Messwerkzeug.

13,99 €
09

Tyenaza

Set of 4 Radius Indicator, Stainless Steel Radius Fillet Gauge Portable Concave Convex Measuring Tool, Radius Gauge Set R0.3-1.5 / R1-6.5 / R7-14.5 / R15-25 for Tool and Die Makers Check

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8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

VERY USEFUL TEACHING FOR TOOL & MOLD MAKERS The metric kit is ideal for tool and mold makers, mechanics, screwdrivers, model makers, layouts, and other mechanics to design and check the radii of tools, molds, patterns, etc.
Stainless steel material --- The radius gauge made of stainless steel, this radius gauge is durable and rustproof.
Precise measurement --- There are four types of radiometers with different shapes and sizes to meet your different needs. It is able to measure quickly and accurately, check the size of the legs. Measuring range R0.3-1.5 / R1-6.5 / R7-14.5 / R15-25
Features: This radius gauge has two types of blades, so both convex and concave surfaces can be tested. The blades are specially shaped so they can measure curves and radii in corners or shoulders.
Clear marking: each radius gauge is clearly marked so you can see the blade you need.

16,49 €
10

BOBOZHONG

BOBOZHONG Understring Radius Gauge, 9 Pieces Guitar Luthier Tool, Radius Gauge Radius Gauge Stainless Steel Understring Radius Ruler Gauge for Saddle Settings

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8.1

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Widely used: electric guitar, electric bass, acoustic guitar, folk guitar, electric box guitar, fretboard arc measurement, string and piano code bow adjustment, etc.
Radius gauge sizes: 7.25" 9.5" 10" 12" 14" 15" 16" 17" 20".
High Quality The guitar gauge is made of high quality stainless steel material, durable and long lasting.
Easy to use: accurate adjustment of the bridge saddle, easy to measure the radius from above or below the strings.
ACCURATE MEASUREMENT Get accurate measurements of your instrument's fretboard radius by using the lower radius of the gauge.

7,69 €