You should to know the basic knowledge of the thread gauges
![GO NO-GO ring gauges for outer threads](https://blog.parts4world.com/wp-content/uploads/2021/03/GO-NO-GO-ring-gauges.png)
Outer and inner thread inspector- Ring gauges & Plug gauges
Read More You should to know the basic knowledge of the thread gaugesOuter and inner thread inspector- Ring gauges & Plug gauges
Read More You should to know the basic knowledge of the thread gauges