Unik Gauges & Tools manufactures Parallel/ Taper Thread Plug Gauge. Unik Gauges & Tools is an ISO 9001: 2008 certified company offering a wide range of Thread Plug, Thread Ring, Plain Plug, Plain Ring and Snap Gauges. The Parallel/ Taper Thread Plug Gauge is available in the range of 2 mm to 200 mm diameter for Parallel Thread and 1/8 inch to 8 inch diameter for Taper Thread. The Parallel/ Taper Thread Plug Gauge comes in different types such as reversible, taper lock or plate type with taper ration of 1:16.