Specifications: Feature: -One combination thread gauge model. -Is one kind of a pitch, the pitch multiple stacked up special measuring tools, thread pitch for inspection. -Can be used for measuring the metric and inch screw thread. The blade can also be used to measure the AF thread per inch of thread. Specifications: Product Name: Thread gauge Material: Stainless steel 430 Color: Silver Accuracy: 0.01 Application: Measuring thread pitch Quantity: 52pcs Measuring range: Metrisch 60°: 0.25,0.3，0.35,0.4,0.45,0.5,0.6,0.7,0.8,0.9,1.0,1.25,1.5,1.75,2.0,2.5,3.0,3.5,4.0,4.5,5.0,5.5,6.0 Whit worth 55°: 4,4.5,5,6,7,8,9,10,11,12,13,14,15,16,18,20,22,24,25,26,28,30,32,36,40,48,60,62 Instructions: 1.measure the thread pitch. - The thread Pilot Group as a template cards toothed steel thread in the measured workpiece, if not close together, the other for one, until snug. -Then mark on the thread size model is the measured workpiece thread pitch. 2.measuring the tooth-shaped corner. - The thread pitch and the measured workpiece thread model on the same thread on top of the test, then check Talia contact, if there is no translucent, tooth-shaped angle measured thread is correct; if there is uneven light transmission phenomenon, it shows the measured thread tooth shape is not accurate. Package Include: 1 x 52 Blade thread gauge 1 x ISO Metric 60°centering gauge thread gauge Tool 1 x English Wyeth 55°centering gauge thread gauge Tool 1 x American Standard 60°centering gauge thread gauge Tool