Stainless steel imperial multifunction thread/pitch identification gauge. • Pitches: 10, 11, 12, 13, 14, 16, 18, 20, 24, 32, 40 (tpi). • Wire Gauge: 0.024", 0.03", 0.035", 0.025", 0.0312", 0.0375", 0.05", 0.0625", 0.078", 0.109", 0.125", 0.14", 0.172", 0.1875", 0.203", 0.234", 0.25".