JBO Thread Ring Gauge (GO) - BSP (G) - Left Hand - Tol. A - 1/8 x 28 Hex Key Drill Chuck that refers to blanks available

that refers to blanks available to be machined into the reamer

09mm is an intermediate precision carbide (k10) stub reamer designed for through‑coolant reaming in DIN 8093 sizes

This Right Hand gauge covers M55 x 2 with a 6h tolerance

The JBO Thread Ring Gauge (NoGo) – Metric Fine – Right Hand – 6g – M58 x 1

Cutting performance: Geometry engineered to lower cutting forces

JBO Thread Ring Gauge (GO) - BSP (G) - Left Hand - Tol. A - 1/8 x 28 Hex Key Drill Chuck that refers to blanks availableThe JBO Thread Ring Gauge (GO) for BSP (G) left hand threads is a precision inspection tool designed to verify external thread diameters on fittings, pipework, and fluid handling components. Sized for 1 8 x 28 with Tol. A, this GO gauge is ideal for engineers, plumbers, manufacturers, and quality inspectors who need quick, reliable conformance checks against BSP G standards. With a dedicated GO face and a robust, knurled body, this gauge lets you