The JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M39 x 2 is a precision Go gauge designed to verify external threads. It provides quick, reliable pass/fail checks for components with metric fine threads, helping machinists, inspectors, and maintenance teams confirm they meet the M39 x 2 specification. This gauge is ideal for use in manufacturing, automotive, and repair environments where accurate thread verification matters.

Crafted from hardened steel for lasting durability, the GO gauge resists wear in busy workshops and demanding conditions. Its left-hand, metric fine design supports clear, repeatable measurements, making it easy to identify properly conforming parts at a glance and keep production moving smoothly.

• Precise GO standard for metric fine threads: Quickly verify external thread diameter and pitch against M39 x 2 to ensure parts meet specification, reducing guesswork and rework.
• Hardened steel construction for durability: Built to withstand daily use in tough environments, maintaining accuracy and extending service life.
• User-friendly left-hand configuration: Enables fast, intuitive go/no-go checks, speeding up inspections and improving workflow in time-sensitive operations.

This gauge helps you streamline quality control, minimize downtime, and deliver consistent results across jobs. With reliable performance and straightforward use, it supports precise inspection of threaded components and enhances overall manufacturing accuracy.