Butt And Fillet Weld Gauge, Display Units of Measure Inch, Measurement Functions Butt Weld Size, Convexity, Fillet Size Range, Unit of Measure Increments 1/32 in, Butt Weld Range 1/32 to 1/8 in, Convexity Range 0 to 3/4 in, Fillet Weld Range (Maximum) 3/4 in, Fillet Weld Range (Minimum) 0 in, Includes 5/16 in and 1/8 in Root Open Measurement Guide, Tool Material Stainless Steel, Tool Type Weld Gauge