Oxy-acetylene indicator dials
Oxy-acetylene blowpipe C-74, by Union Carbide & Carbon Corporation, Newark, New Jersey, United States and Oxweld Acetylene Co., New York, United States, 1917-1929
Oxy-acetylene blowpipe C-74, by Union Carbide & Carbon Corporation, Newark, New Jersey, United States and Oxweld Acetylene Co., New York, United States, 1917-1929