The JBO Thread Ring Gauge (GO) for Electrical Conduit is a precision tool designed to accurately verify external thread diameters, helping you ensure every threaded connection meets Unified thread standards. Ideal for manufacturing, automotive, aerospace, and electrical conduit applications, this gauge enables quick, reliable inspections to prevent misfits in critical assemblies.

It features a Go side for fast acceptance checks and a no-go design that clearly identifies non-conforming threads, reducing rework and downtime. Crafted for reliability with hardened steel construction, it resists wear and maintains accuracy through daily use.

• Go/No-Go Verification: Quickly determine whether threads are within tolerance, speeding inspections and reducing guesswork.
• Metric M20 x 1.5 (8g) Right-Hand Thread: Precisely matches the target thread size for reliable, repeatable checks on common conduit components.
• Hardened Steel Durability: Built to withstand daily use in demanding workshop environments while maintaining long-term accuracy.

This gauge streamlines quality control by delivering fast, repeatable measurements that improve fitment accuracy, reduce downtime, and support consistent results across production and maintenance workflows.