The JBO Thread Plug Gauge (NoGo) for BSP (G) left-hand threads is a precision inspection tool designed to verify the integrity of threaded pipe connections. With meticulous design and precise dimensions, it helps plumbers, engineers, and maintenance teams ensure fittings will thread together smoothly and seal reliably when used with BSP (G) standards.

Sized for practical, on‑site checks, the 2 1/2 x 11 NoGo gauge delivers quick, clear pass/fail results, enabling efficient quality checks and reducing guesswork in busy workshops.

• NoGo design for rapid validation: Quickly identify non‑conforming BSP (G) threads, helping ensure correct fit and reliable sealing on every connection.
• BSP (G) Left-Hand compatibility: Precisely matched geometry for left‑hand BSP threads, reducing measurement errors and preventing cross‑threading.
• Durable, precision‑crafted construction: Built from robust materials with a smooth finish for consistent measurements and long service life in demanding environments.

Whether you’re performing routine maintenance, quality control inspections, or installation checks, this gauge streamlines the process, minimizes downtime, and supports repeatable, dependable results across jobs.