1/4x20 BSW Screw Ring Thread Gauge Go or NoGo whitworth

Specification BSW Ring Gauge Option of Go or NoGo gauges 1/4" BSW Ring gauges comply to BS 84, BS 919 Part 2 Part Number ES-3922

For more information on 1/4x20 BSW Screw Ring Thread Gauge Go or NoGo whitworth talk to JLS Supplies Ltd