JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M135 x 4 A&NF The combination of taper shank

The combination of taper shank geometry

you can trust your thread measurements and ensure parts meet required specifications before assembly

and 2-flute carbide construction

Durable Hardened Steel Construction: Built to endure daily workshop use

you streamline quality checks and minimize guesswork

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M135 x 4 A&NF The combination of taper shankThe JBO Thread Ring Gauge (NoGo) Metric Fine Right Hand 6g M135 x 4 is a precision inspection tool designed to verify external thread diameters quickly and reliably. Ideal for inspectors, machinists, quality teams, and maintenance professionals, it helps ensure threaded components meet exact standards across manufacturing and repair environments. Durable hardened steel construction: Built from hardened steel to resist wear, maintain dimensional