The JBO Thread Ring Gauge (GO) is a precision go gauge designed for external BSP (G) threads on right-hand fittings. Sized at 2 1/2 x 11 with Tol. A, this compact tool is built for plumbers, engineers, and field technicians who need quick, reliable thread verification in plumbing, fluid handling, and general mechanical work.

Used during inspection and assembly, it helps verify that pipe fittings conform to BSP (G) standards, ensuring proper fit and reliable sealing. The go design makes it easy to identify properly matching threads at a glance, reducing guesswork and rework in your workflow.

• Go-design for fast conformance checks: The go gauge allows quick, at-a-glance verification of properly formed BSP (G) threads, helping you confirm good threads on first try and minimize inspection time.
• Exact BSP (G) external thread sizing, Tol. A: Precisely machined to BSP (G) standards with Tol. A tolerance, so you can rely on consistent diameter checks for fittings and seals.
• Rugged, knurled body with easy grip: Knurled outer surface provides secure handling in tight spaces and workshop conditions, improving control and accuracy during measurement.

This gauge streamlines your workflow by delivering reliable, repeatable measurements that support compliant assemblies and leak-free connections. By reducing rework and speeding up inspections, it helps technicians, buyers, and teams plan more efficiently while maintaining quality across plumbing, fluid handling, and engineering applications.