Easy to use Press the notch to take measurements without hurting your hands. This enables quick and convenient radius checks. High precision ARC reading ARC reading provides accurate measurements for reliable radius determination. Durable construction Radius gauge forged from alloy steel and treated for long-lasting durability in everyday use. Versatile application Compare measured arcs to determine the correct radius for both concave and convex surfaces. What you get Material: alloy steel. Function: radius gauge with ARC reading for accurate arc measurements. Designed for repeatable results in a range of tasks. Use scenarios - Automotive body work: verify radii on fenders, panels, or trim to ensure replacements fit precisely. - Metal fabrication: confirm bracket, gusset, or housing radii match design specs. - Woodworking and DIY: replicate curved edges on furniture, moldings, or decorative pieces. Reliable and straightforward tool for accurate radius measurement and arc comparison.