The JBO Thread Ring Gauge (NoGo) – Metric Fine, Left Hand, M68 x 1.5 – is a precision tool for checking external metric threads. It’s an ideal choice for machine shops, quality teams, and maintenance personnel who need fast, reliable confirmation that a threaded part meets specification.

Crafted from hardened steel for lasting durability, this gauge resists wear and maintains accurate measurements through heavy use. The knurled outer edge provides a secure grip in tight spaces, while the NoGo design makes nonconforming parts easy to spot at a glance—helping to speed inspections without sacrificing accuracy.

• Precise metric NoGo verification: Designed to the exact external thread limits for M68 x 1.5 left-hand threads, the NoGo side delivers a clear pass/fail result to speed and simplify quality checks.
• Durable hardened steel construction: Built to resist wear, corrosion, and the rigors of daily workshop use, helping maintain dimensional stability and reducing calibration downtime.
• Left-hand thread friendly and easy to use: Specifically designed for left-hand threaded components, with a straightforward inspection workflow that minimizes errors and makes nonconforming parts easy to identify.

With the JBO Thread Ring Gauge, you can streamline your inspection process, reduce guessing, and achieve consistent, reliable thread validation across shifts. Its rugged construction and simple handling empower teams to deliver precise assemblies with less rework and downtime.