Using the JBO Thread Ring Gauge helps streamline your inspection process
with robust materials and build that stand up to daily use and long-term performance
providing stable alignment during reaming and easier setup
Flutes: 2-flute configuration for efficient chip clearance and stable cutting
The combination of taper control
JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M12 x 1.25 Face Mill Arbors Using the JBO Thread RingThe JBO Thread Ring Gauge GO Metric Fine, Right Hand, 6g, M12 x 1. 25 is a precision tool designed to verify external thread sizes quickly and reliably. Its ideal for engineers, machinists, quality inspectors, and shop staff who need to confirm that threaded components meet exact specifications in production, assembly, or maintenance tasks. Crafted from hardened steel for durability, it resists wear in busy environments and maintains its accuracy over