... of Thread Plug Gauge and Thread Ring Gauge with ISO/DIN/UNC/UNF Standard WE SUPPLY ALL TYPE OF THREAD PLUG & THREAD RING GAUGES LIKE ACME, TRAPEZOIDAL, ... BUTTRESS, MODIFIED SQUARE, PLAIN GAUGES, TAPER, METRIC, UNC, UNF, BSP, ... : 2 mm TO 300 mm· TAPER THREAD RING GAUGES : 1/16” TO 10”· TAPER THREAD PLUG GAUGES : 1/16” TO 10 ...