Triode Mini Ion Gauge Tube with 90° Elbow Back Catalog number: 342015 Availability: In the manufacturer's stock Price on request - + Recommended G7000-20444 Extractor Lens, 3mm, for 7000B QQQ 258,74 € G1999-20443 73CI ION Focus Lens 194,83 € G3870-20448 EXTRACTOR LENS, 6MM DIAMETER 254,85 €