Air gauging applications using plug gauges require at least two setting rings: 1 x high (+), 1 x low (-)
Some ultra precision applications dictate that three setting rings are required: 1 x high, 1 x low, 1 x zero.
Sizes are dictated by the application and typically the nominal component diameter.
The rings are manufactured from the finest materials to exacting standards for precision and long term stability.
UKAS certification is available when required.