Kurt J. Lesker Company | KJLC® 275 Series Gauge Tubes | Enabling Technology for a Better World,275 Convectron Convection-enhanced Pirani vacuum gauges,Kurt J. Lesker Company | KJLC® 275 Series Gauge Tubes | Enabling Technology for a Better World,Ideal Vacuum | MKS Granville Phillips 275 Convectron Gauge Vacuum Pressure Measurement Sensor, foreline roughing gauge NW KF16, PN: 275203,Kurt J. Lesker Company | KJLC® 275 Series Gauge Tubes | Enabling Technology for a Better World