JBO Thread Ring Gauge (GO) - UNF - Left Hand - 2A - No. 1 x 72 RPTECH and reduced downtime during high-precision

and reduced downtime during high-precision manufacturing

Crafted in high-speed steel (M2) with a left-hand spiral flute and right-hand cutting

it uses a taper shank for secure seating in compatible holders

The JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M78 x 2 is a precision go gauge designed to verify external thread diameters against metric fine standards

JBO Thread Ring Gauge (GO) - UNF - Left Hand - 2A - No. 1 x 72 RPTECH and reduced downtime during high-precisionThe JBO Thread Ring Gauge GO UNF Left Hand 2A No. 1 x 72 is a precision inspection tool designed to verify external thread diameters with confidence. Its ideal for engineers, machinists, quality teams, and workshop technicians who need to confirm that UNF left hand threads meet the required diameter. Made from hardened steel, this GO ring gauge delivers durable, long lasting performance in demanding work environments and supports repeatable