This professional and practical thread gauge features precise measurements and a simple design. Stainless steel material, it is strong, practical and for long time to use. It is used to measure the tool angle when cutting threads on metal lathes, accurately measure internal and external threads with thread inserts of different sizes, bring you much more convenience and good using feeling. Features - Color: silver. - Material: stainless steel. - Size: 6.60X2.00X1.30cm/ 2.59X0.79X0.51inch. - 55 ° (inch):4G, 4-1/2G, 5G, 6G, 7G, 8G, , 10G, 11G, 12G, 13G, 14G, 16G, , 1 , 20, 22G, , 25G, 26G, 28G, 30G, 32G, 36G, 40G, 48G, 60G, 62G. - Metrisch 60° (metric):0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.7, 0.75, 0.8, 0.9, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5. 6.0. - The pitch gauge uses stainless steel, which is not easy to rust and for long time to use. - Professional, convenient, accurate measurement, can be used to measure the pitch of threads and external threads. - Wide measurement range to meet your needs for measuring tool angles when cutting threads on metal lathes. - The foldable structure is easy to carry, the edges make measurement and inspection more efficient. - Light in weight, compact in size, save time and effort, not easy to rust or wear, you can use it with confidence. Package list: 1 x Thread Pitch Gauge