Specification Brand : ZJchao BulletPoint1 : [Versatile Compatibility] Compatible with a variety of string instruments including guitars, basses, banjos, ukuleles, and mandolins. BulletPoint2 : [Accurate Curvature Identification] Quickly and accurately determine the curvature of fingerboards or saddle nuts with this handy tool. BulletPoint3 : [Premium Design] Featuring 4 different measuring sides ranging from 7.25in to 12in, this gauge provides precise fingerboard radius measurements for most guitars. BulletPoint4 : [Sturdy Construction] Crafted from stainless steel, this gauge is built to last, ensuring long-term use for all your instrument needs. BulletPoint5 : [Portable and Convenient] Compact and easy to carry, this measuring tool is for gigs, rehearsals, and tuning sessions on the go. ItemName : Fretboard Saddle Nut Radius Gauge, 4 in 1 Design, Accurate Radius Identification, Stainless Steel Construction, Multi Instrument Compatibility, Compact and Portable, 7.25in, ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 15 centimeters ItemPackageDimensions_Width : 10 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : radius-gauges Manufacturer : ZJchao ModelName : ZJchaomnvbk83aro ModelNumber : ZJchaomnvbk83aro PartNumber : ZJchaomnvbk83aro ProductDescription : 1. [4 in 1 Design] This guitar radius gauge features 7.25in, 9.5in, 10in, 12in on each side, allowing for accurate measurements of fingerboard radius, suitable for most guitars. 2. [Accurate Radius Identification] With this measuring tool, you can quickly and accurately determine the curvature of fingerboards or saddle nuts. 3. [Stainless Steel Construction] Crafted from sturdy stainless steel material, this fretboard radius gauge is sturdy and built to last, ensuring long term use. 4. [Multi Instrument Compatibility] This saddle nut radius gauge is compatible with a range of string instruments such as guitars, basses, banjos, ukuleles, mandolins, and more. 5. [Compact and Portable] The fingerboard measuring tool is compact and easy to carry, making it convenient to bring along for gigs, rehearsals, or tuning sessions.