1.3/8"x6 BSW Screw Ring Thread Gauge Go or NoGo whitworth

Specification 1.3/8 BSW Ring Gauge Option of Go or NoGo gauges Ring gauges comply to BS 84, BS 919 Part 2 Part Number ES-3934

For more information on 1.3/8"x6 BSW Screw Ring Thread Gauge Go or NoGo whitworth talk to JLS Supplies Ltd