Nude, Bayard Alpert Gauge, Single Iridium Filament, 2 3/4″ Flange, MKS Style

Our GB28IR is a Bayard Alpert style nude ionization gauge is mounted on a 2 3/4" flange and has a double helix tungsten grid, a tungsten collector, and a single coated iridium hair pin filament assembly and is a drop in replacement for the 274028 gauge.  We can supply GF29 replacement single iridium hair pin filaments mounted on a ceramic base. Our GF29 is a drop in replacement for the MKS 274029 filament. We can also rebuild the gauge for you.  See our Nude Ionization Gauge Cross Reference Guide.