... /2”(63mm), 4”(100mm), 6”(150mm), 8”(200mm), 10”(250mm) dial sizes availableVacuum to 10,000 psi,. other ranges also available ... ), 2”(50mm), 2-1/2”(63mm), 4”(100mm), 6”(150mm) dial sizes availableBottom or back connection, front and back flanges, u ... stainless steel systemsMany different stem lengths, connections and configurations pressure gauge