JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M20 x 0.5 Widin New right-hand orientation: Easy to align

right-hand orientation: Easy to align and insert during inspection

and hobbyists who require dependable precision without guesswork

86mm is a precision tool designed for accurate hole finishing in metalworking

repeatable hole diameters and easy integration with standard fixtures and tooling

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M20 x 0.5 Widin New right-hand orientation: Easy to alignThe JBO Thread Ring Gauge (NoGo) is a precision external thread checking tool sized for metric fine threads, specifically M20 x 0. 5, with 6g tolerance and right hand engagement. It helps inspectors, machinists, and quality teams quickly verify that threaded components meet exact size requirements. This hardened steel NoGo gauge delivers durable, repeatable performance in busy workshops, resisting wear and reducing rework by clearly flagging non