Features: Ensure optimal playabilitys and sound accuracy with our professional guitar neck radius gauge, designed for precise measurement of guitar neck curvature. Crafted from steel, this durable and rusts resistant tool features a toothless design to prevent scratching the guitar neck. Ideal for professional guitarists, instrument repair technicians, and music enthusiasts seeking precisions in their craft. Perfect for guitar tunings, maintenance, and dailys care, enhancing your playing experience and ensuring your instrument is always in top condition. This essential guitar accessory is a must have for anyone serious about maintaining their instrument's performances and longevity. Specifications: Component: Steel Size: Approx. 3.39x3.39inch(8.6x8.6cm) Package Includes: 2 Optional Package: A: 2x Radius Gauge Or B: 4x Radius Gauge 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.