The JBO Thread Ring Gauge (GO) – Metric Fine is a precision inspection tool designed to verify external threads with clarity and speed. Ideal for engineers, machinists, quality inspectors, and workshop teams, it helps confirm that threaded components meet exact metric fine dimensions. Built for daily use, this gauge supports reliable GO checks against the M40 x 2, 6e right-hand standard, ensuring consistent results across production runs.

• GO‑style precision for metric fine threads: Quick, pass/fail checks of external threads to metric fine tolerances (M40 x 2, 6e, right‑hand), speeding inspection and reducing rework.
• Rugged hardened steel construction: Durable, wear‑resistant design that maintains dimensional integrity in busy workshops and demanding environments.
• Standard right-hand 6e M40 x 2 sizing: Aligns with common external thread specifications for reliable, interoperability-friendly measurements.

Using the GO ring gauge streamlines quality control, delivering repeatable measurements that improve workflow and assembly accuracy. It helps you quickly identify conforming parts, reduce downtime from misfits, and maintain consistent results across batches with confidence.