The filaments, fabricated from tungsten, rhenium, or iridium, come in straight, hairpin, V-shape, spiral, or special configurations with yttria or thoria coatings and plain ends or platinum tabs for welding ease. The coatings ensure a burnout-resistant base metal and low-work function to improve filament operation.

ETI
2400 Philmont Ave.
Huntingdon Valley, PA 19006
(215) 947-2500
etigauges.com