G 1/4x19 BSP Thread Ring Gauge No-Go Class "B" Free Fit
Specification G1/4 BSP Go or NoGo screw ring thread gauge 1/4.19 tpi BSP Conforms to BS2779, BS 919 Part 2 1/4" Calibration certificate see "calibration screw thread gauges" Part Number ES-7372Visit the JLS Supplies Ltd website for more information on G 1/4x19 BSP Thread Ring Gauge No-Go Class "B" Free Fit