Description: It is a new type of multi-function measuring tool for measuring riveting products, mainly used for measuring pressure vessels and welded pipes. Measurement range 0-50mm and resolution 0.5mm. Made of high quality stainless steel, this gauge is durable and not easily scratched. Gauge surface is wear-resisting and ensures a clear reading The test items include edge angle?unfitness of butt joint?surface bump,plane straightness?arc curvature and more Specification: Product size: 310x2x170mm/12.2x0.08x6.69inch Accuracy: 0.5mm Material: stainless steel Package Includes: 1 Piece of Gauge