OVERVIEW. Product Overview. Strata Twin Gauge Regulators. Available for Acetylene, Argon, CO2 or Oxygen gas. Twin gauge style displays cylinder pressure and output gas flow (Argon/Co2), output gas pressure (Oxygen, Acetylene). Standard 5/8-18 UNF gas outlet fitting. Includes nut & hose tail for 5-8mm gas hose. Replaced by Strata GR105 Twin Gauge Gas Regulators