Features
• Accurately milled steel blades
• Designed to check both internal and external thread forms
• Marked with nominal size on each blade
• All blades fixed in a steel sleeve
• Screw cutting gauge included
Combined SI Metric and Whitworth
Number of Blades 49
Thread per mm
METRIC 0.4, 0.5, 0.7, 0.75, 0.8, 0.9, 1.0 1.25, 1.50, 1.75, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0
TPI
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
