Asimeto Plug Thread Gauge (D/E) - Metric - Right Hand - 6H - M52 x 1.5The Asimeto 682 Series M52 x 1. 5 right hand plug gauge is a precision tool designed for engineers, machinists, and quality inspectors who verify internal metric threads. Built to the 6H tolerance class, it provides dependable checks of thread pitch diameter for metric fine fasteners. Series: 682 Series plug gauges, crafted for accuracy in internal thread verification. Thread size: M52 x 1. 5, right hand configuration for standard metric fasteners.