https://pligg.samweber.biz/story.php?title=metric-thread-gauges-%E2%80%93-the-types-and-details%7C-a-know-how Three types of metric thread gauges exist in the market. They are ACME, UN and Trapezoidal thread gauges. Each differs from one another on their threads per inch, through and blind cutting dimensions. Therefore, it is important to understand each of them before making your choice of gauging device. Mon, 21 Aug 2017 06:15:26 UTC en