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Measurements if possible in either inches or millimeters General Linear Measurements up to 2"(50mm).Use to angle of preparation and measure depth of undercut and pitting, fillet weld throat size, fillet weld length, outside misalignment. All numerical values indicating sizes are clear and can be easily read out. It made of high strength stainless steel, the ruler is not easy to bend and wear, never rust, and it also ensure accurate measurement. It weld inspection ruler with fastening screws can be fixed at any point which is convenient for readings. Inch Metric Cam Welding Gauge Inspection Surfaces Joints Stainless Steel