The JBO Thread Ring Gauge (GO) is a precision tool designed to verify external metric threads with confidence. Specifically tuned for metric fine threads in the M70 x 4 size with a right-hand orientation, this GO gauge helps you quickly confirm that components meet exact dimensional standards during inspection.

Crafted from hardened steel, it offers excellent wear resistance and durability for demanding shop environments. Its straightforward design makes it easy to read and use, enabling quick identification of conforming threads and supporting efficient quality control across assemblies and finishes.

• Metric fine GO verification for M70 x 4: Tailored to metric fine threads, enabling fast, reliable checks of major diameter and fit to ensure parts meet exact specifications.
• Hardened steel construction for durability: Built to withstand daily use in busy workshops, maintaining accuracy and extending service life even with frequent handling.
• User-friendly conformance identification: Clear geometry and smooth operation allow inspectors and machinists to quickly determine pass/fail, reducing inspection time and downstream rework.

Used in quality control, assembly lines, and precision machining, this GO ring gauge helps you streamline external-thread inspection, minimize guesswork, and maintain consistent results across production runs. Its durable build and easy-to-use design support faster QC decisions, better part compatibility, and reliable performance in challenging environments.