·用于测量凸形和凹形焊缝的有效焊脚尺寸 ·包含七片 ·不锈钢尺身 ·51-433-157:3,4,5,6,8,9,10,11,12,14,16,19,22,25mm ·51-433-158:1/8" 3.2mm, 3/16" 4.8mm, 1/4" 6.4mm, 5/16"7.9mm,3/8" 9.5mm, 7/16" 11.1mm, 5/8" 15.9mm,3/4" 19.1mm, 7/8" 22.2mm, 1" 25.4mm