Features: The guitar luthier tool set offers comprehensive measurement solution, perfect for tuning and maintaining your guitar with precisions. Crafted from metal, each tool in this set is designed for high accuracy, ensuring reliable result suitable for professional use. Ideal for guitar player, instrument repair technicians, music school students, and guitar making enthusiasts. Perfect for guitar tuning and regular maintenance, professional instrument repair shops, music courses, and DIY guitar repair and modification. Enhancing your efficiency with features like the radius gauge for quick fingerboard curvature assessment and the string action ruler for precise string height measurements. Specifications: Component: Metal Size: As Picture Shows Package Includes: 1 Set Repair Accessories note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.