Buzzek Bracketswing is an engineering trainer located in Gadgetzan in Tanaris. He teaches Artisan Engineering for both factions in Classic WoW.
In-game Picture
Location in Tanaris
He's standing right outside the Inn, on the left side, near the mailbox. (52.2, 27.6)
TomTom command:
/way Tanaris 52.2 27.6 Buzzek Bracketswing
