The JBO Thread Ring Gauge (GO) is a precision tool designed to verify external threads to the metric fine standard. Sized for M33 x 2 and configured for right-hand threads, this GO gauge helps inspectors and machinists quickly determine if a part’s thread diameter conforms to spec.

Made from hardened steel for lasting durability, it resists wear in busy workshops. Its knurled outer edge provides a secure grip for fast, one-handed use, even with gloves, while the 4h tolerance class ensures reliable, repeatable results in daily quality checks.

• Fast go/no-go verification: Quickly confirm external thread conformance to M33 x 2 with a simple go/no-go test, speeding up QC and reducing rework.
• Durable hardened steel construction: Built to withstand daily use in busy shops, delivering long service life and maintaining measurement accuracy over time.
• Metric fine tolerance with right-hand orientation: 4h tolerance on M33 x 2 ensures consistent, repeatable results across batches and among operators.

Using the JBO Thread Ring Gauge (GO) helps streamline inspection workflows, reduce downtime due to nonconforming parts, and support precise assembly and maintenance tasks. It provides clear, reliable results that you can trust across daily operations, improving overall quality and efficiency in your shop.