The JBO Thread Ring Gauge (GO) – Metric Fine is a precision tool designed to quickly verify external thread diameters against standard metric fine threads. It’s ideal for inspectors, machinists, and quality teams across manufacturing, automotive, and general mechanical assembly, helping ensure parts meet the exact M72 x 1.5 specification.
Built from hardened steel for long life, this Go gauge resists wear in busy workshops. Its right-hand orientation, 6e class, and metric fine pitch support reliable measurements even after repeated use, giving you confidence in every test.

• Precise Go Gauge for Metric Fine Threads (M72 x 1.5, Right-Hand, 6e): Quickly verify external thread diameter against the exact metric fine-thread standard, reducing inspection time and boosting first-pass acceptance.
• Hardened Steel Construction for Long Life: Resists wear in demanding workshop environments, delivering consistent measurements over thousands of uses.
• Easy, Quick Conformity Checks: The go gauge design clearly shows whether a part meets the standard, speeding QA cycles and reducing rework.

With the JBO Thread Ring Gauge, inspections become faster, more reliable, and repeatable. It provides a clear go/no-go decision that helps operators catch nonconforming parts earlier, reduces downtime, and supports tighter process control across assemblies. The durable construction means fewer replacements and a longer service life in production environments, making it a dependable foundational tool for quality teams and skilled technicians.