The JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external thread diameters on mechanical components. Specifically tailored for British Standard Whitworth (BSW) right-hand threads, this gauge helps engineers, buyers, technicians, and hobbyists confirm that threaded parts meet exact size requirements during production, assembly, or quality control. Sized for Medium class and a 1 1/8 x 7 thread, it provides a reliable reference for proper fit and function.

• No-Go quick conformance check: Quickly identify non-conforming threads by blocking improper sizes, enabling fast pass/fail decisions and reducing inspection time.
• Hardened steel construction: Built to resist wear and corrosion, delivering long-lasting accuracy and repeatable results through many cycles of use.
• BS W Right Hand, Medium Class, 1 1/8 x 7 sizing: Optimized for standard external threads in this category, supporting consistent checks against established thread profiles and tolerances.

With the JBO Thread Ring Gauge, you’ll streamline quality control, minimize downtime due to misfits, and achieve reliable, repeatable measurements across production runs. This gauge provides clear, practical feedback that helps ensure components thread correctly, fit reliably, and meet the expectations of demanding applications in automotive, manufacturing, and beyond.