The JBO Thread Ring Gauge (GO) is a metric fine, right-hand GO gauge designed to verify external thread diameters with precision. It serves engineers, machinists, inspectors, and quality teams, helping you confirm that threaded components meet exact specifications with a quick, decisive GO check.

Manufactured with hardened steel, this gauge stands up to daily use in demanding workshops. Its metric fine threading and compact ring geometry deliver durable, repeatable measurements that support fast quality control and consistent part interchangeability.

• Metric Fine GO gauge precision: Quickly validate external thread diameters against tight metric tolerances, delivering a clear pass/fail result to speed inspections and reduce rework.
• Hardened steel construction for longevity: Built to resist wear in busy environments, preserving accuracy and extending service life through many measurement cycles.
• Right-hand, 6g with M130 x 3 sizing: Provides a consistent, industry-standard reference for common metric threads, ensuring easy, reliable use across a wide range of components.

Together, this gauge helps you streamline thread inspections, improve workflow reliability, and maintain high-quality assemblies. Its durable build and precise metric fine sizing enable confident decisions, reduce downtime, and support consistent results across production and maintenance tasks.