The JBO Thread Ring Gauge (GO) - BSW - Right Hand - Medium Class - 1 3/4 x 5 is a precision tool designed to help you quickly and reliably verify external thread diameters on fasteners and mating components. It’s ideal for engineers, machinists, quality inspectors, and workshop professionals who need confident, standard-compliant measurements without guesswork.

Made from hardened steel for durability, this GO gauge is built to stand up to daily use in busy shops and labs. Its simple, easy-to-read design lets you identify properly conforming threads at a glance, helping streamline quality checks and maintain consistent results across production runs.

• Fast go/no-go verification: Enables immediate pass/fail checks on the GO limit for external threads, speeding inspections and reducing rework.
• Hardened steel durability: Withstands frequent handling and wear, preserving accuracy and extending tool life in demanding environments.
• BSW Right-Hand, Medium Class precision: Specifically matched to common British Standard Whitworth threads with a reliable right-hand orientation, delivering repeatable measurements you can trust.

Using the JBO GO Ring Gauge helps you tighten quality control, shorten inspection cycles, and ensure components fit correctly on first assembly. Its reliable performance supports smoother workflows, fewer delays, and consistent results across batches.