The JBO Thread Ring Gauge (GO) – Metric Fine is a precision inspection tool designed to confirm external thread diameters with speed and confidence. Ideal for engineers, machinists, quality teams, and workshop technicians, it provides a clear Go reference to verify parts meet metric fine thread specifications.

This left-hand gauge, sized M75 x 1.5 with a 6g tolerance, is crafted from hardened steel to deliver durable, wear-resistant performance in busy shop floors. Its simple ring design makes it easy to identify components that conform to the standard, supporting consistent quality control across batches.

• Go Gauge for Metric Fine Threads: Delivers a quick pass/fail check for external thread diameters against the Go limit, helping you confirm M75 x 1.5, 6g specifications quickly and with minimal setup.
• Hardened Steel Construction for Long Life: Built to withstand daily use, resisting dents, nicks, and wear so you can rely on accurate measurements after many cycles in demanding environments.
• Left-Hand Thread Compatibility: Designed to match left-hand thread standards, enabling straightforward identification of conforming parts without cross-checking multiple tools.

In practice, this gauge reduces inspection time, boosts measurement confidence, and supports traceable quality across production, maintenance, and repair workflows. By providing a precise Go reference for the M75 x 1.5, 6g threads, it helps you avoid misfits, rework, and delays—keeping assemblies tight, reliable, and on schedule.