The JBO Thread Ring Gauge (GO) is a precise tool for checking external UNEF threads, designed for engineers, inspectors, machinists, and quality teams to verify thread diameters quickly and reliably. Crafted from hardened steel, it delivers long-lasting performance in busy shops, resisting wear and maintaining accuracy over time.

• Durable hardened steel construction: Built to withstand daily use in production environments, minimizing wear and maintaining tolerance over time.
• Precise GO gauge for UNEF external threads: Specifically sized to verify external diameter against UNEF GO standards, enabling fast go/no-go checks and reducing inspection time.
• User-friendly design for quick identification: Visual cues and a smooth inner bore help inspectors quickly identify compliant parts, improving workflow and traceability.

By integrating the JBO Thread Ring Gauge into your inspection routine, you gain faster, more reliable quality decisions. The GO gauge supports consistent results across shifts, reduces rework by catching non-conforming parts at the source, and extends tool life through durable construction. Whether you are setting up a new QC process or tightening an existing one, this ring gauge provides dependable performance for precise, repeatable measurements.