Asimeto Plug Thread Gauge (D/E) - Metric - Right Hand - 6H - M55 x 2The Asimeto Plug Gauge (682 Series) is a precision tool designed to measure and verify the internal threads of metric fasteners. Ideal for machinists, inspectors, and quality teams, it delivers reliable pitch diameter checks with clear, go no go clarity. Series and standard: 682 Series plug gauges designed to conform to the 6H tolerance class for metric internal threads. Thread size and direction: Right hand M55 x 2 internal thread gauge for accurate