Master Your Guitar's Setup with StewMac Understring Radius Gauges
If you're serious about setting up your guitar or bass, understanding the radius of your fretboard is crucial for proper action and intonation. The StewMac Understring Radius Gauges, a set of 9 with radii from 7-1/4 to 20 inches, let you measure and set the radius while the strings are still on, saving you time and ensuring accuracy.
Key Considerations Before Buying
- Match the gauge to your instrument's fretboard radius. Most Fender-style guitars use 7.25 to 9.5 inches, while Gibson uses 12 inches and many modern guitars use 16 inches. This set covers all common radii.
- The understring design allows you to check the radius without removing strings, which is essential for quick adjustments and for verifying the curve after truss rod and bridge adjustments.
- The set fits string spreads up to 2-5/8 inches, making it compatible with 6-string guitars and most 4-string basses. For 7-string or extended-range instruments, verify your string spread before purchasing.
What Our Analysts Recommend
Look for gauges made from durable, non-marring materials like anodized aluminum or stainless steel. Precision machining ensures each radius is accurate, and a clear, readable scale helps you quickly identify the correct gauge. StewMac is known for high-quality luthier tools, and these gauges are no exception.
Tools Market Context
Market Overview
The guitar tools market is crowded with budget options, but serious players and luthiers gravitate toward trusted brands like StewMac. Understring radius gauges are a specialized tool that bridges the gap between basic setup kits and professional-grade equipment, offering precision for a reasonable price.
Common Issues
Inexpensive radius gauges often have inaccurate markings or are made of soft metal that can scratch the fretboard. Some designs are too wide to fit between strings, or they only measure the fretboard radius, not the string radius, which can lead to mismatched action.
Quality Indicators
Look for gauges that are precisely cut, with a smooth finish and no burrs. The set should include a range of radii that cover vintage and modern specs. A reputable brand with a history in luthier supplies, like StewMac, is a strong indicator of quality. Also, check that the gauges are designed to work with strings on, as not all are.
Review Authenticity Insights
Grade B Interpretation
The Grade B rating and 10% estimated fake reviews indicate that while the vast majority of reviews are genuine, a small portion may be incentivized or unnatural. This is typical for a popular product from a well-known brand, where some sellers may attempt to boost ratings. The high adjusted rating of 4.60/5 still reflects strong overall satisfaction.
Trust Recommendation
Trust the consensus: the product is well-regarded. Pay attention to detailed reviews that mention specific use cases, like setting up a Stratocaster or a Jazz Bass, as these are likely authentic. Be wary of overly brief, vague reviews that lack specifics.
Tips for Reading Reviews
When reading reviews for tools, focus on those that mention the tool's accuracy, durability, and ease of use. Look for comments about the gauge's fit under strings and whether it helps achieve a consistent action. Ignore reviews that are purely emotional or lack technical detail.
Expert Perspective
The StewMac Understring Radius Gauges are a must-have for any guitarist or bassist who does their own setups. The set's range covers nearly all common fretboard radii, and the understring design is a game-changer for making quick, accurate adjustments. The high genuine rating and positive feedback from the community confirm its value.
Purchase Considerations
Consider your instrument's specific radius and string spread to ensure compatibility. If you own multiple guitars with different radii, this set is an excellent investment. If you only own one guitar with a standard radius, a single gauge might suffice, but the set offers future flexibility.
Comparing Alternatives
While there are cheaper alternatives, they often lack the precision and durability of StewMac. Compare with other understring gauges from brands like Music Nomad or Fender, but be aware that StewMac's reputation for quality is well-earned.
