Universal Welding Gauge(with screw), Known as HJC40B, used for measure bevel angle of weldment, the width and height of weld seam, and the weld gap.
plate thickness
height of flat weld, two ways
height of fillet weld bead, two ways
thickness of fillet weld
bevel angle of weldment
gap size

consists of main scale, height gauge, undercut depth gauge and multiple-purpose gauge.
Height: 0-40mm
Gap: 1-3mm