The JBO Thread Ring Gauge (NoGo) for BSP (G) left-hand threads is a precision inspection tool designed to verify external thread diameters on pipe fittings. Built for professionals in plumbing, fluid handling, and engineering, it helps ensure BSP G connections thread smoothly and seal reliably. This left-hand version features Tol. A tolerance and a 1 x 11 size reference to support accurate go/no-go checks across common BSP fittings.

Designed for efficient quality control and field checks, the NoGo design quickly reveals non-conforming BSP (G) threads, helping you avoid improper fittings and leaks. The gauge is crafted to maintain accurate readings at the required tolerance (Tol. A) with a clear size reference of 1 x 11, so you can test with confidence on each job.

• NoGo BSP (G) Left-Hand Thread Verification: Quickly determine whether an external thread meets the no-go limit for BSP (G) left-hand fittings, reducing rework and ensuring proper thread engagement and sealing.
• Tol. A Precision (1 x 11) for Consistent Checks: Manufactured to Tol. A with a clear 1 x 11 sizing reference, delivering repeatable measurements across inspections and inspectors.
• Rugged, User‑Friendly Construction: Solid metal ring gauge with a knurled edge and a subtle red marker visible in use, built to withstand daily workshop and field use while staying easy to clean and maintain.

The JBO Thread Ring Gauge helps you streamline assembly and quality checks by providing fast, reliable go/no-go verification for BSP (G) threads. Its durable construction and precise tolerance support consistent results, reducing downtime and ensuring every connection meets sealing requirements. Use it across jobs from commissioning new pipe networks to routine maintenance to achieve dependable, leak-free performance.