The JBO Thread Ring Gauge (GO) is a precision tool designed to verify external thread diameters with confidence. It’s ideal for machinists, quality control inspectors, and workshop technicians who need fast, reliable checks to ensure threaded components meet exact size and tolerance requirements during production and inspection tasks.

Crafted from hardened steel for lasting durability, this GO ring gauge is built to withstand everyday use in demanding environments. The UNS configuration—with right-hand orientation, 2A class, and a 1 x 14 size—provides a standard reference for common external threads, delivering dependable performance across a wide range of parts and applications.

• Hardened-steel construction for long life: Resists wear and maintains measurement accuracy through many cycles of inspection in busy shops.
• Clear GO verification for quick inspections: Enables fast, unambiguous pass/fail checks, reducing inspection time and human error.
• Standard 1 x 14 right-hand size: Fits typical external-thread applications, allowing easy setup and broad compatibility with parts and processes.

Using the JBO Thread Ring Gauge (GO) streamlines your quality control workflow by providing consistent, repeatable measurements that you can trust. Its durable build and precise sizing help you minimize rework, speed up inspections, and maintain confidence in every threaded connection across manufacturing, maintenance, and assembly tasks.