9-Piece Guitar Radius Gauge Set – Stainless Steel Luthier Tool

9-Piece Stainless Steel Guitar Radius Gauge Set

Get your guitar or bass set up like a pro with this precision 9-piece under-string radius gauge set. Crafted from durable stainless steel and etched with clearly marked radius measurements on each handle, these gauges make it simple to match your bridge saddles perfectly to your fretboard radius — whether you're working from above or below the strings.

Whether you're a seasoned luthier or a passionate DIY guitarist, this compact toolkit is an essential addition to your setup bench. Achieve optimal playability and string action with accurate, repeatable measurements every time.

Key Features

• Set of 9 gauges — covers a wide range of fretboard radius measurements
• Durable stainless steel construction — built to withstand regular workshop use
• Etched radius markings on each handle for easy, at-a-glance identification
• Works above or below the strings — versatile measurement from any angle
• Accurately aligns bridge saddles to match fingerboard radius for ideal playability
• Compact size: approx. 2.75 × 2.55 in (7 × 6.5 cm) per gauge

Specifications

What's in the Box

• 9 × Under-String Radius Gauges (set)

Looking for more tools and accessories for your projects? Check out our 10pcs Durable Blade Nut Universal Trimmer Accessories and our Stainless Steel Self-Tapping Screws for all your workshop needs.

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Frequently Asked Questions

Q: What fretboard radius sizes does this guitar radius gauge set cover?

A: This 9-piece stainless steel under-string radius gauge set covers a broad range of common fretboard radius measurements used on guitars and bass guitars. Each gauge is clearly etched with its specific radius value on the handle, so you can quickly identify and match the right gauge to your instrument's fingerboard.

Q: Can I use these radius gauges on both guitar and bass fretboards?

A: Yes! These under-string radius gauges are compatible with both guitar and bass fretboards. They can be used from above or below the strings, making them highly versatile for setting up bridge saddles, checking fingerboard curvature, and achieving precise string action on a wide variety of fretted instruments.

Q: Are these gauges durable enough for regular luthier workshop use?

A: Absolutely. These gauges are made from stainless steel (alloy steel), which provides excellent durability and resistance to everyday workshop wear. The radius values are etched directly into the handles — not printed — so the markings remain legible even with repeated use.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.