The JBO Thread Ring Gauge (NoGo) – Metric Fine, Right Hand, 6g, M140 x 2 is a precision tool designed to verify external thread diameters quickly and reliably. Built for engineers, inspectors, machinists, and maintenance teams, it helps you confirm whether a threaded component meets size limits with clear, decisive results.

Crafted from hardened steel, this gauge delivers exceptional durability and wear resistance for daily use in demanding shop environments. The NoGo design makes non-conforming threads easy to spot, supporting efficient quality control and helping to prevent mismatched parts from progressing through production.

• Hardened steel construction: Designed to withstand daily use in busy workshops, delivering long life and dependable measurements even after repeated handling.
• NoGo quick pass/fail checks: Clearly indicates non-conforming threads, speeding inspections, reducing rework, and minimizing downtime.
• Metric fine, right-hand precision (M140 x 2): Specifically matched to common metric fine-thread applications, ensuring accurate, repeatable checks for reliable quality control.

Whether you're setting up new equipment, performing routine QA, or validating threaded components in repair and maintenance, this gauge helps you work faster with greater confidence. Its robust build, precise sizing, and intuitive usability support consistent results across teams and jobs, making it a reliable addition to any inspection or manufacturing workflow.