The JBO Thread Ring Gauge (NoGo) is a precision tool for inspecting external threads. Designed for metric fine threads (M19 x 1), it helps engineers, machinists, and quality teams quickly verify that parts stay within the required size and tolerance.

Crafted from hardened steel for durability, this right-hand, 4h NoGo gauge delivers long-lasting performance in demanding workshop environments. Its straightforward design makes it easy to identify non-conforming threads, supporting fast, reliable quality control and precise engineering outcomes.

• Precise metric fine threading (M19 x 1): Provides reliable NoGo checks of external threads, enabling quick pass/fail decisions and reducing the risk of out-of-tolerance parts entering production.
• Hardened steel construction for durability: Built to resist wear in busy workshops, ensuring stable measurements and a long service life.
• Ergonomic right-hand design with 4h orientation: Facilitates fast inspections on the shop floor, easy alignment, and clear pass/fail outcomes even during high-volume checks.

In practice, this gauge helps standardize threaded component inspections, reduces rework, and improves overall workflow. Its durable build and precise sizing give you reliable results day after day, so your team can inspect, certify, and move parts through quality checks with increased confidence.