190AR-50-B light duty "MIG METER" flow gauge regulators are designed for MIG & TIG applications to provide accurate regulation of gas flow. They are ideal for commercial, industrial and laboratory applications. 2" flow gauge for easy reading. Forged brass for body and housing cap. Chrome-plated housing cap. Internal pressure relief design. Accurate measurement of gas flow up to 50 SCFH. Choice of inlet connections for argon (CGA 580) or carbon dioxide (CGA 32)Plastic adjustment knob for smooth "easy touch" flow settings. 0-50 SCFH argon (Ar) flow. UL listed.