This is a Ion Gauge Replacement Single Thoria Coated Iridium Filament Kit for the MKS Granville Phillips 274 Nude Single Thoria Coated Iridium Filament Ion Gauges (resistive or electron bombardment degas). This is a Filament Kit ONLY, allen wrench included. Ion Nude Gauges and Controllers sold separately on this website.

Fits the Following MKS Granville Phillips 274 Series Single Thoria Coated Iridium Filament Nude Ion Gauges:
• NW40 KF40 flange, pin guard locking strain relief, PN: 274053
• 2.75 inch CF Conflat (NW35CF) non-rotatable, PN: 274028
• 2.75 inch CF Conflat (NW35CF) non-rotatable, pin guard locking strain relief, PN: 274043