The JBO Thread Ring Gauge (NoGo) - Metric Fine is a precision tool for inspecting external thread diameters. Designed for a wide audience—from engineers and machinists to quality inspectors and hobbyists—it helps confirm compliance with metric thread standards, including M68 x 1.5 right-hand threads.

Crafted from hardened steel, this NoGo gauge delivers durable, wear-resistant performance that stands up to daily use in busy shops. Its user-friendly Go/NoGo design makes it easy to identify non-conforming threads, supporting efficient quality control and precise engineering workflows.

• Go/NoGo quick conformance checks: Instantly identify non-conforming threads during inspection, speeding quality control and reducing rework.
• Hardened steel construction: Delivers durable, wear-resistant performance for long service life in demanding environments.
• Precise metric size: M68 x 1.5, right-hand threads: Engineered to match the exact external thread size and orientation, ensuring reliable measurements and repeatable results.

Using the JBO Thread Ring Gauge (NoGo) - Metric Fine simplifies inspections by providing clear, actionable feedback on threaded components. It helps your team accelerate workflows, improve measurement consistency, and ensure parts meet the required standards and specifications with confidence.