The radius fillet gauge set includes 5 different measuring ranges: R0.3-1.5, R1-6.5, R7-14.5, R15-25, and R25-50, designed to meet various measurement needs. Made from high-quality stainless steel, this radius gauge is durable, resistant to rust, and features high hardness for long-lasting performance. The tool includes two types of blades, enabling inspection of both convex and concave surfaces. The convex blade checks concave surface arcs, while the concave blade checks convex surface arcs. A 360-degree locking screw allows for easy unfolding and folding. Each blade is clearly marked for quick identification. This radius gauge is widely used in machinery installation, electrical equipment, tool and mold manufacturing, and by mechanics for measuring tool radii, screw thickness, valve dimensions, and bearing width. Model Number: Radius Gauges Color: Silver Material: Stainless Steel Package Contents: 1 x R0.3-1.5 radius gauge 1 x R1-6.5 radius gauge 1 x R7-14.5 radius gauge 1 x R15-25 radius gauge 1 x R25-50 radius gauge Note: The package includes only the items listed above. Other products are not included. Due to lighting and display differences, the color in the image may vary slightly from the actual item. Measurement error is +/- 1-3 cm.