Description
Imperial Screw Pitch GaugeScrew Pitch Unified Number of Blades 30 Threads per mm 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 11.5, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 40, 42Accurately milled steel blades Designed to check both internal and external thread forms Marked with nominal size on each blade
