The JBO Thread Ring Gauge (NoGo) – Metric Fine is a precision tool for verifying external thread diameters. It’s designed for M140 x 3 metric fine threads and is ideal for engineers, machinists, QC teams, and hobbyists who need fast, reliable conformance checks.

Crafted from hardened steel for durability, this NoGo gauge is built to withstand daily use in demanding environments. Its right-hand orientation and compact 6 g weight make it easy to handle in tight spaces and during extended inspection tasks.

• Accurate NoGo verification for metric fine threads: Quickly identify non-conforming external M140 x 3 threads at a glance, speeding up quality checks and reducing rework.
• Hardened steel construction for long-lasting durability: Built to resist wear from daily inspections, maintaining accuracy over time in challenging shop environments.
• Right-hand design with lightweight handling (6 g): Enables easy, one-handed use in tight spots, reducing operator fatigue and speeding up repetitive checks.

In practice, the JBO Thread Ring Gauge (NoGo) accelerates your inspection workflow, helps you sort parts confidently, and supports reliable, repeatable thread measurements in daily production or assembly tasks.