Specification Brand : Zerone BulletPoint1 : [Concave & Convex Surfaces] The gauge features two types of leaves to check both concave and convex surfaces accurately. BulletPoint2 : [Easy Identification] Each leaf is clearly marked for convenient leaf selection, making measurements and efficient. BulletPoint3 : [Wide Measuring Range] With various measuring ranges, this gauge can measure the radius of objects accurately and effectively. BulletPoint4 : [ Stainless Steel] Made of stainless steel, this radius gauge is resistant to , ensuring long-lasting use. BulletPoint5 : [Versatile Usage] Ideal for tool & die makers, machinists, and other workers to check the radius of tools with ease and precision. ItemName : Stainless Steel Radius Gauge for Concave Convex Surfaces, Measuring Tool with Leaves, Useful for Tool & Die Makers (R25-50MM) ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 8 centimeters ItemPackageDimensions_Width : 6 centimeters ItemTypeKeyword : radius-gauges Manufacturer : Zerone ModelNumber : Zeronebgnfpk13es-05 PartNumber : Zeronebgnfpk13es-05 ProductDescription : Specification: