JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M68 x 1.5 FHH and profiles across a range

and profiles across a range of materials

ideal for professionals who need consistent bore diameters and smooth finishes

Durable hardened steel construction: Designed to withstand daily workshop use

Benefits: The TiAlN coating paired with a robust HSS-E core extends tool life in tough milling conditions

2 mm radius creates gentle fillets in corners and grooves

JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M68 x 1.5 FHH and profiles across a rangeThe JBO Thread Ring Gauge (GO) is a precision tool designed to verify external metric threads quickly and reliably. Built for metric fine pitches, this GO gauge is specifically suitable for left hand threaded components and features an M68 x 1. 5 specification to match common inspection needs. Its ideal for engineers, machinists, quality inspectors, and maintenance staff who need consistent, on the job accuracy. Crafted from hardened steel, the gauge