This is a pitch gauge, which is very professional for measuring threads and external threads. Using stainless steel material, high hardness, practical, easy to use, light and delicate, precise size, simple design, support for a long term using. Checking the tool angle is useful when cutting threads on a metal lathe. 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. - Using stainless steel, this thread gauge has high hardness, very professional, not easy to break or damage. - Checking the tool angle is useful when cutting threads on a metal lathe. - Can be widely applied for industry, household goods, automobile industry and many other fields to use. - Foldable, easy to use and store, save much of your space, time and effort, bring you more convenience. - A screw pitch gauge is one of the most valuable tools in any mechanic's toolbox for quickly determining the pitch of threads of various sizes. Package list: 1 x Thread Pitch Gauge