... /8" 1/4" 1/2" 3)CE Certificate Panel Mounting Pressure Gauge 4Z2U are high quality dry gauges design ... ", 3.5", 4", 4.5", and 6", 8", 10",CASE MATERIAL:Steel case, steel black case, steel chrome plated ... 3.5", 4", 4.5", and 6", 8", 10",CASE MATERIAL:Steel case, steel black case, steel chrome plated ... recalibrators,restrictors, special connections and more. Crimped Ring Panel Mounting Pressure Gauge 4Z2U