... carbon steel, alloy steel, copper, aluminium etc.6. Compact and portable, v easy to operate, suitable for outdoor usage.Detailed graphicsPower ... knob 3,Gas output connection socket4,Overheat signal lamp5,Torch/air pressure abnormal lamp6,Cutting ready lamp7,Air pressure ... meter8,Cutting and air test selection switch9,Plasma cutting torch connection socket10,On/Off switch11,Power ...