Taper Gage 1-15mm Stainless Taper Welding Gauge Test Ulnar Inch&Metric Accurate figures and increments are etched into surface, easy to read Polished, bright and clean without burr, rust laser engraved line and will not rub off Made of stainless steel, miniature and light weight, pocket size For measuring of cylindrical bores Welding taper gauge: 1-15mm (1/64-5/8 inch)