The JBO Thread Ring Gauge (GO) for BSP (G), Left Hand, Tol. A, 1 1/2 x 11 is a precision go gauge designed to verify external BSP threads quickly and reliably. Built for plumbers, fabricators, engineers, and maintenance teams, it helps ensure fittings thread in smoothly and seal securely by confirming the go condition fits within the specified tolerance.

Engineered for durability and repeatable results, this gauge withstands daily workshop use and field service. Its precise dimensions support fast inspections, reduce downtime, and improve consistency across projects.

• Go gauge for BSP G (1-1/2 in x 11 TPI, Left-Hand): Quickly verify that an external BSP thread will engage and seal by confirming it passes the go condition, enabling fast in-process checks and acceptance testing.
• Left-Hand thread compatibility: Specifically designed for systems that use left-hand BSP G threads, ensuring accurate measurements without cross-reading or misinterpretation.
• Tight Tol. A tolerance with durable finish: Machined to Tol. A to maintain repeatable measurements; finished to resist wear from oils, coolant, and cleaning agents for long service life.

Used by plumbing contractors, hydraulic engineers, makers, and workshop inspectors, this JBO Thread Ring Gauge helps you decide with confidence whether a fitting will fit and seal on the first attempt. It supports faster quality checks, reduces rework, and improves overall workflow by providing reliable, repeatable measurements for BSP G threads.