This product is made up of four parts: the main scale, the height gauge, the undercut depth gauge and the multiple-purpose gauge. The HJC40 gauge is a kind of welding inspection gauge, which is used to detect various groove angles, heights, widths, clearances and undercut depths of weldments. It is suitable for testing of boilers, bridges, shipbuilding, pressure vessels and oilfield pipelines, and is also suitable for measuring parts with high quality of welding.

This gauge is made of stainless steel, with reasonable structure, beautiful appearance, convenient use and wide measuring range.