The JBO Thread Plug Gauge is a precision inspection tool designed to verify BSP (G) threaded pipe connections. This left-hand go/no-go gauge helps plumbers, engineers, and quality inspectors quickly determine whether a fitting’s threads meet the BSP (G) standard and will seal and thread correctly.

With a size of 1 1/8 x 11, this compact gauge is ideal for both field service and workshop calibration, enabling fast acceptance checks before assembly or leakage testing.

• Go/No-Go Design for Rapid Validation: Instantly confirms whether the BSP (G) thread falls within tolerance, reducing guesswork and rework during installation and inspection.
• Left-Hand BSP (G) Compatibility: Specifically engineered for left-hand BSP (G) threads, ensuring you validate the correct orientation without cross-reading.
• Ergonomic, Durable Construction: Knurled body provides a secure grip in tight spaces, while robust ends are built for repeated use in busy workshops and field environments.

Using this gauge streamlines maintenance and quality checks, speeds up fittings validation, and helps ensure tight, leak-free connections across plumbing, fluid handling, and engineering applications.