The JBO Thread Ring Gauge (Go/NoGo) - NPTF, Right Hand, 1 1/4 x 11.5 is a precision measuring tool designed for NPTF threaded connections. It’s an essential instrument for engineers, buyers, tradespeople, and hobbyists who need fast, reliable verification of pipe fittings to ensure proper fit and sealing in automotive, hydraulic, and fluid-power systems.

With its right-hand orientation and exact 1 1/4 x 11.5 size, this Go/NoGo ring gauge provides straightforward, intuitive checks—you can quickly confirm whether a thread will screw in smoothly and seal reliably on the first attempt.

• Fast Go/NoGo verification for quick conformance: The go/no-go checks deliver an immediate pass/fail indication, speeding inspections and reducing guesswork during assembly and maintenance.
• NPTF-tuned tolerances for reliable sealing: Precisely matched to NPTF standards so fittings seat correctly and seal consistently, cutting down leaks and rework.
• Right-hand, standard-size design for broad compatibility: The right-hand orientation and 1 1/4 x 11.5 size fit common fittings and configurations, delivering dependable use across automotive, hydraulic, and fluid-power applications.

Using the gauge streamlines workflow by delivering repeatable, trustworthy measurements, helping you catch mismatched threads before installation. It reduces downtime from leaks or reseating issues and strengthens quality control across service bays, workshops, and manufacturing environments. The JBO Thread Ring Gauge gives you confidence that every threaded connection meets exact tolerances, ensuring reliable performance and long service life for your piping and hydraulic systems.