The JBO Ring Gauges (Go/NoGo) - BSPT (R) are precision measuring tools designed for 3/8 x 19 BSPT threads (British Standard Pipe Taper, R). Tailored for plumbers, mechanical engineers, and maintenance professionals, these gauges verify both fit and seal of BSPT connections—ensuring reliable performance in piping systems, fluid handling, and hydraulic assemblies.

With exact dimensions and a clear go/no-go design, you can quickly distinguish compliant from non-compliant threads, reducing trial fittings and downtime.

• Go/NoGo validation at a glance: Quickly determine if a BSPT (R) thread fits and seals correctly, saving time and preventing costly misfits in assemblies.
• DIN EN 10226 BSPT (R) compliance: Dimensions and tolerances aligned with the DIN EN 10226 standard ensure consistent results across fittings and installations.
• Durable, precision-ground construction: Tight tolerances and robust finish withstand daily workshop use, delivering reliable measurements over many cycles.

The JBO Go/NoGo BSPT Ring Gauges provide a reliable, repeatable method to validate thread quality on critical pipe fittings. They help you speed up inspections, reduce guesswork, and ensure every connection threads in cleanly and seals properly on first attempt. Designed for 3/8 x 19 BSPT (R) fittings, these gauges integrate seamlessly into busy workshops, QA processes, and field service, delivering confidence on every job.