Meet the JBO Thread Ring Gauge (NoGo) – a precision tool for checking external metric fine threads. Designed for left-hand M40 x 1.5 threads, this NoGo gauge helps engineers, inspectors, and production teams quickly confirm thread conformance and prevent misfits in assemblies. Crafted from hardened steel for durability, it withstands routine use in busy workshops while delivering reliable NoGo results at the required size.

• NoGo quick conformance check: Quickly identify non-conforming threads, reducing inspection time and preventing incorrect assemblies.
• Hardened steel durability: Built to withstand daily wear in busy shops, maintaining accurate checks over time.
• Metric Fine, M40 x 1.5, Left-Hand design: Precisely sized for the task, enabling reliable verification of left-hand metric fine threads with consistent results.

This ring gauge simplifies quality control by delivering fast, unambiguous pass/fail results. Its robust construction and exacting dimensions help reduce downtime, prevent rejects, and support repeatable, high-quality assemblies across manufacturing and maintenance environments.