The JBO Thread Ring Gauge (GO) - UNC - Left Hand - 2A - 1 1/2 x 6 is a precision go gauge used to verify external threads on parts with UNC left-hand threads. It supports quick, reliable inspection by confirming that a threaded component meets the required diameter and class tolerance, helping you maintain consistent quality in manufacturing and assembly.

Built for demanding environments, this gauge combines durable materials with a thoughtful design. Crafted from hardened steel with a wear-resistant finish, it resists wear in busy QC labs and machine shops while preserving measurement accuracy. The knurled outer surface provides a secure grip for easy handling, even when wearing gloves, making setup fast and straightforward.

• Precise UNC GO gauge for LH 1 1/2 x 6, 2A: Enables fast, reliable go checks of external thread diameter and class tolerance, helping identify compliant parts at a glance.
• Hardened steel construction with wear‑resistant finish: Delivers long-lasting durability and stable accuracy in high-use environments, reducing replacement costs and downtime.
• Ergonomic knurled exterior for secure handling: Ensures a non-slip grip and quick setup in tight spaces or with gloves, speeding inspections and minimizing handling errors.

This gauge helps streamline your quality control workflow by delivering quick, repeatable assessments of external threads. With durable construction that holds calibration over time, you can rely on consistent results across shifts, reduce scrap, and improve confidence when assembling threaded components.