Buy now the Moore & Wright MW-804 – Screw Pitch Gauge Whitworth/S.i.metric available at . Metric & Imperial Screw Pitch GaugeCombined SI Metric and Whitworth Number of Blades 49 Thread per mm IMPERIAL 4, 4.5, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 36, 40, 48, 60 Accurately milled steel blades Designed to check both internal and external thread forms Marked with nominal size on each blade Screw cutting gauge included – 60 Degrees. Available online with other Moore & Wright products.
