1.9/16 X 20 UNS - 2A Screw Ring Thread Gauge Go / NoGo

20tpi UNS Go or NoGo screw ring gauge 1.9/16 Conforms to BS1580, BS 919 Part 1 Class 2A Calibration certificate see options

For more information on 1.9/16 X 20 UNS - 2A Screw Ring Thread Gauge Go / NoGo talk to JLS Supplies Ltd