Screw plug and ring gauges are manufactured to ISO metric to BS3643, BS919 Part 3. Unless otherwise specified, screw plug gauges will be supplied to class 6H and screw rings and screw callipers to class 6g.
All screw plug and ring blanks are to BS 1044. In addition to standard screw plug gauges, we can also provide combination gauges such as:
Single end effective No Go – Style D
Go screw plug / No Go plain core plug gauge – style F
Go screw plug / Go plain core plug gauge – style G
No Go screw plug / No Go plain core plug gauge – style H.