Plain Ring Gauges, used for attribute inspection of Plain External Diameter measurement. Plain Ring gauges are used to check plain holes and plain shafts. This is the simplest and most effective way of checking holes and shafts. If you want to inspect the external diameters of the manufactured parts, plain ring gauges is a good choice. You can quickly pass or fail parts without undergoing a time consuming process of taking readings with the conventional measuring instrument, with the help of these plain ring gauges. The plain ring gauges are fabricated using both steel and tungsten carbide. We produce gauges using advanced technology with best quality raw material.