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![1.3/8"x6 BSW Screw Ring Thread Gauge Go or NoGo whitworth](https://images.findtheneedle.co.uk/findtheneedle/products/17098366.jpg)
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
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