Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Assembly Worker's Legguards Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Assembly Worker's Legguards suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Transmog Sets
Assembly Worker's Legguards is part of the transmog set Demonbreaker Battleplate (Warrior, Paladin and Death Knight only). The other 16 pieces:
Items Numbered Next to Assembly Worker's Legguards
Blizzard numbers items as they are created, so the named items next to ID 128033 (128028 to 128038) were usually added in the same batch as Assembly Worker's Legguards: the same quest line, zone, vendor or reward set.