US Type Thread Pitch Gauge - 51pcs thread blades of SAE size, measuring range: 4 - 84, 60 Thread gauge the degree of the tooth-shaped model.Premium Screw Pitch Gauge - Made of stainless steel with chrome finish processed, combines high strength, good resilience, and wear resistance.Exquisite Workmanship - Thread pitch gage with delicate appearance and toothed edges is sharply defined, the numbers are stamped and easy to read.Unique Design - Compact thread plug gage with rotatable narrow-leaved design can easily rotate the thread blades, portable and convenient to measure.Wide Application - Useful thread pitch measuring tool with precise measurements for checking tool angle while cutting threads in metal turning lathes, accurately measuring internal and external screw threads.Specifications:Material: Stainless SteelApplicable: Industrial measurementType: USLength: 5.8cmcolor as showDesign: Narrow-leaved Design(51 pcs)60 Degree 51 Blades Gauge Range:4,4.5,5,5.5,6,7,8,9,10,11,11.5,12,13,14,15,16,18,20,22,24,26,27,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84Instructions:Measuring the thread pitch: Choosing a suitable gadget for the measured target until they match perfectly, the marked number on the gadget is the data you are searching for.Measuring thread tooth angle: Choosing a suitable gadget for the target, if there is no gap translucent, the tooth-shaped angle measured thread is correct; if it is uneven light transmission gap phenomenon shows the measured thread tooth shape is not accurate.Package Included:1 x Thread Measuring Gauge