The LN-9 A quality-conscious concept in semiautomatic welding-a wire feeder which, when used with an appropriate Lincoln constant voltage power source, takes the guess work from procedure setting and procedure control. The arc voltage and wire feed speed can be set on a digital meter before the arc is struck and the procedure remains precisely set a day in and day out on production jobs. New LN-9GMA and LN-9F GMA high speed models provide additional performance and application features especially suited to small wire gas metal/arc welding processes.