JBO Thread Ring Gauge (NoGo) - BSP (G) - Left Hand - Tol. A - 1 1/4 x 11

The JBO Thread Ring Gauge (NoGo) for BSP (G) connections is a precision inspection tool designed to verify exterior thread sizes on pipe fittings. Sized for 1 1/4 x 11 and built for left-hand BSP (G) threads, it helps plumbers, engineers, and inspectors confirm that fittings will seal and perform as intended.

With its meticulous craftsmanship and precise dimensions, this gauge enables quick, reliable checks as part of everyday workflows—ensuring every connection meets BSP (G) standards and reducing the risk of misfits in critical applications.

• No-Go Design for Quick Conformity Checks: The dedicated no-go feature makes it easy to identify out-of-tolerance threads, speeding inspections and reducing the chance of improper fit or leaks.
• BSP (G) Standard Verification: Specifically sized to verify external BSP (G) threads, helping ensure fittings meet required dimensions and seal suitability.
• 1 1/4 x 11 Left-Hand with Tolerance A: Precisely sized for the target thread form, with left-hand orientation and tolerance class A to deliver consistent, repeatable measurements across inspections.

Used in quality control, field installations, and maintenance workflows, the JBO NoGo Ring Gauge streamlines checking processes, reduces inspection time, and provides confidence that every BSP (G) connection will thread correctly and seal reliably in plumbing and engineering applications.