The JBO Thread Ring Gauge (GO) - Metric Fine, Right Hand, M39 x 1.5 is a GO-style ring gauge designed to accurately verify external thread diameters. Ideal for inspectors, machinists, engineers, and manufacturers, it helps confirm that threaded components meet the M39 x 1.5 right-hand standard during quality checks and assembly.

• Accurate metric fine threading: Provides exact M39 x 1.5 right-hand thread dimensions for dependable external-thread inspections and clear pass/fail decisions.
• Hardened steel construction: Delivers long service life with excellent wear resistance in demanding workshop and QA environments.
• Intuitive GO gauge design for fast checks: Enables quick identification of conforming parts, reducing inspection time and minimizing rework.

With this gauge in your toolkit, you gain consistent, reliable measurements that support precise assembly, faster throughput, and improved quality across production runs.