1、RUST RESISTANT STAINLESS STEEL: Our weld seam inspection gauge is made of premium stainless steel, ensuring long lasting durability and rust resistance. 2、SEVEN MEASURING BLADES: With seven measuring blades, each blade can measure the size of two concave and convex welding toes, providing versatile functionality. 3、DUAL SCALE TRANSPARENCY: This tool features both inch and metric scale measurements. The laser engraved scale ensures accurate and durable markings. 4、WIDE APPLICATION RANGE: This weld gauge is widely used in welding inspection fields for applications such as boilers, bridges, shipbuilding, pressure vessels, and oilfield pipeline inspections. Also suitable for measuring premium welding requirements for components. 5、CONVENIENT AND PORTABLE: Compact and lightweight, our weld seam inspection gauge can be easily carried and used on various welding sites, making it a must have tool for professionals.