About the Company ETI Gauges: Principles of Operation Ionization Gauges Special ETI Gauges OEM and Custom Designs Configurations of Standard Gauges Earlier Model Gauges Replacement Filament Assemblies ETI Custom Filaments ETI Stems Contact ETI		Quality Ionization Vacuum Sensors, Filaments and Components ETI 2400 Philmont Ave. PO Box 662 Huntingdon Valley, PA 19006 U.S.A. Phone: (215) 938-4400 Fax: (215) 947-7464 Email: techin@etigauges.com Site best viewed using IE 4.0 or Navigator 4.0 web browsers. ©1999 ETI