5/16x18 BSW Screw Ring Thread Gauge Go or NoGo whitworth

Specification BSW Ring Gauge Option of Go or NoGo gauges 5/16" BSW Ring gauges comply to BS 84, BS 919 Part 2 Part Number ES-3923

For more information on 5/16x18 BSW Screw Ring Thread Gauge Go or NoGo whitworth talk to JLS Supplies Ltd