JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6h - M42 x 1 is a precision tool designed for fast, reliable external thread inspection. It helps machinists, quality inspectors, and engineers quickly verify that threaded components meet their specified size and pitch, ensuring smooth assembly and consistent performance in a wide range of projects.

Crafted from hardened steel, this GO gauge delivers long-lasting durability in demanding shop environments. The metric fine M42 x 1 specification and right-hand orientation are integrated into a user-friendly design, making it easy to confirm proper conformity at a glance and support efficient quality control workflows.

• Precise GO gauge for metric fine threads: Quickly verifies external thread diameter and pitch (M42 x 1) to ensure parts align with exact standards, reducing guesswork and rework.
• Hardened steel construction: Built to withstand daily use in busy workshops, delivering stable accuracy and extended service life even in challenging environments.
• Easy pass/fail inspection: Intuitive design lets operators identify compliant components at a glance, speeding up inspections and minimizing downtime.

Using the JBO Go ring gauge streamlines quality control, accelerates setup, and delivers reliable results across production runs. It supports precise, repeatable measurements that help you lock in quality, improve workflow efficiency, and maintain confidence in every threaded assembly.