Made of good quality stainless steel, this fillet welding joint gauge is not easily scratched. The two-piece gauge is a combination of a radius-ruler-shaped welding leg gauge and a throat depth gauge. Gauge surface is clearly marked by which is wear-resisting and ensures a clear reading. Small size and portable, convenient to carry, so you can take it anywhere. It is a great small measuring tool to have if you are working in welding field.