CENTER GAUGE WHITWORTH 55 degree 14ths and 20ths screw thread gage CNC Center Gauge 55 Degree Whitworth Measuring Thread Gage 14ths 20ths 24ths 32ths Increments Stainless Steel has anti-temperature and ant-oxidation property Laser engraving technology marks the scale to make it clearer The gauge is mini size and light weight, it is easy to take along Packed in plastic bag for the convenience of storage and carrying