Unik Gauges & Tools offers Parallel/ Taper Thread Ring Gauge. Unik Gauges & Tools is an ISO 9001: 2008 accredited company supplying a wide range of Thread Plug, Thread Ring, Plain Plug, Plain Ring and Snap Gauges. The Parallel/ Taper Thread Ring Gauge is available with diameter ranging from 3 mm to 150 mm and finds application in various industrial sectors. The Parallel/ Taper Thread Ring Gauge comes with a taper ratio of 1:16.