Pressure Gauge (Manometer) Available with Acrylic, Glass and Polycarbonate Lens General Service Pressure GaugeCase sizes: 1.5", 2", 2.5", 3.5", 4", 4.5", 6", 8", and 10"Case material: steel case, steel black case, steel chrome plated case, steel gold plated case, brass polished case, stainless steel case, all this can take with front flange, back flange and U-clamp.Bezel material: steel black ...