A portable EDM device and system thereof for producing calibration reflectors on a pipe includes a base mountable on the pipe, a motor mounted on the base, a cutting tool operably connected to the motor, an electrode operably connected to the cutting tool, a power source mounted on the base and operably connected to the electrode and operably connectable to the pipe, and a source of dielectric fluid mounted on the base. The power source is configured to electrically discharge a voltage from the electrode to the pipe to remove material from the pipe. The source of dielectric fluid is in fluid communication with the pipe to remove the material removed from the pipe.