Asimeto Ring Thread Gauge (NoGo) - Metric - Right Hand - 6g - M18 x 2.5The Asimeto 684 Series NoGo Ring Thread Gauge is a precision testing tool designed for metric coarse threads, specifically the right hand M18 x 2. 5 size. Built for quality teams, workshops, and maintenance crews, it provides fast, reliable verification that threaded parts stay within the lower limit of the tolerance. Thread Type: Metric coarse 6g threads; M18 x 2. 5, right hand configuration NOGO Function: Checks minimum material condition, ensuring