This machine is an ESAB LPG-50 model plasma cutting unit. Function: Used for cutting various metals using a plasma arc. Control: It has switches for AIR CHECK and LOCK-IN, as well as a knob for adjusting the OUTPUT CURRENT. Specifications: Provides cutting power commensurate with the indicated current settings, and acts as a regulator and power source for the cutting process. Warning: Ensure industrial safety procedures are followed when using cutting and welding equipment.