Air gauging applications using ring gauges require at least two setting plugs: 1 x high (+), 1 x low (-)
Some ultra precision applications dictate that three setting plugs are required: 1 x high, 1 x low, 1 x zero.
Plugs are supplied as single or double ended and fitted with a hand grip. Larger plug sizes >62mm are supplied as single ends.
UKAS certification is available when required.