Choosing a Replacement Filament for a Nude Ion Gauge
- Identify the Nude Gauge Type from the Previous Page: I, II, III, IV or V
- Identify the Filament Material: T-Tungsten or I-Iridium (thoria coated)
- Check the External Pins: A-Straight or B-Bent or C-Varian (see photos below)
- Select Replacement Filament from the Table Below.