The JBO Thread Ring Gauge (GO) - BSP (G) - Left Hand - Tol. A - 1 3/4 x 11 is a precision go gauge designed to verify external BSP (G) thread diameters. It’s a practical tool for plumbers, engineers, inspectors, and maintenance teams, delivering a fast, reliable check of thread conformance to BSP standards with Tol. A tolerance that ensures consistent measurements for reliable fits and seals.

• Go gauge for BSP (G) threads: Instantly confirms proper conformance on external BSP G threads, speeding inspections and reducing rework.
• Left-hand BSP thread support (Tol. A): Specifically designed for left-hand BSP threads and built to Tol. A accuracy to ensure precise diameter verification across fittings.
• Rugged, easy-grip construction: Knurled outer surface and durable metal deliver secure handling and long service life in busy workshops and field environments.

By using the JBO Thread Ring Gauge, you streamline inspections, reduce rework, and improve confidence in every BSP (G) connection. The Go design quickly confirms conformance, while the left-hand compatibility ensures accurate checks on non-standard fittings. Durable construction supports reliable performance in busy workshops, field service, or QC labs, helping you speed installs, ensure leak-free seals, and maintain consistent quality across projects.