The JBO Thread Ring Gauge (GO) – Metric Fine is a precision tool designed to verify external thread diameters with confidence. Sized for M65 x 1.5 and configured for left-hand threads, this GO gauge helps engineers, machinists, quality inspectors, and shop technicians perform fast, reliable thread checks to ensure parts meet exact standards.

Manufactured from hardened steel for lasting durability, the gauge resists wear in demanding environments and maintains measurement accuracy over the life of the tool. Its knurled, easy-grip outer edge and compact ring form enable simple, repeatable go/no-go checks and straightforward identification of conforming components.

• Precise GO gauge for metric fine threads: Quickly verify external threads against the M65 x 1.5 left-hand standard, reducing inspection time and preventing costly rework.
• Hardened steel construction for durability: Built to withstand daily shop use, delivering long-term accuracy and reliable performance even in busy production environments.
• Ergonomic, easy-to-use design: Knurled grip and simple geometry support fast handling and consistent results, improving workflow in QC and assembly processes.

Used as a straightforward pass/fail tool, this gauge helps you speed up inspections, maintain tight tolerances across batches, and confidently confirm that threaded components meet required specifications before moving to next production steps.