JBO Thread Ring Gauge (Go/NoGo) - NPT - Right Hand - 1 1/2 x 11.5

The JBO Thread Ring Gauge (Go/No-Go) is a precision inspection tool designed to verify NPT right-hand threaded pipe connections. It’s ideal for plumbers, engineers, maintenance technicians, and quality inspectors across plumbing, oil and gas, and manufacturing sectors. Its main advantage is fast, reliable assessment of thread fit and seal capability, helping ensure every threaded joint will assemble cleanly and seal properly.

Sized for the common 1-1/2 in NPT size with 11.5 threads per inch, this gauge provides an exact go/no-go reference that confirms threads are within specification. The simple pass/fail feedback accelerates inspections at the workbench or in the field, reducing downtime and rework while supporting consistent, standards-compliant fittings.

• Go/No-Go Quick-Check Design: Instantly identify conforming vs. non-conforming threads, reducing inspection time and preventing faulty fittings from moving forward.
• NPT Right-Hand Size Verification (1-1/2 in, 11.5 TPI): Precisely matches standard pipe connections to verify fit and sealing capability, helping prevent leaks and misthreading.
• Rugged Build for Daily Use: Designed for regular shop or field use, delivering consistent performance and long service life in demanding environments.

Using the JBO Thread Ring Gauge streamlines quality control by providing a clear, repeatable pass/fail result for NPT threads. It helps ensure correct thread engagement, reduces the risk of leaks, and minimizes rework on critical pipe connections. With straightforward operation and reliable results, it supports faster inspections across projects in plumbing, oil and gas, and manufacturing while promoting consistent, code-compliant assemblies.