Product Features:

• Certification of conformity
• Stainless steel
• Metric thread sizes: 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, 0.60, 0.70, 0.75, 0.80, 0.90, 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 (24 diameter)
• Whitworth thread sizes: 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, 62 (28 diameter)
• Used to measure the outer and inner diameters of metric and Whitworth threads
• Precision measurement
• Safe to use

The measuring tools are accurate and easy to use, suitable for both general and specialized measurements.