Tisch des Rüstungsschmieds, aka Workbenches, grant your Rüstungen increased Armor for a limited duration. They can typically be found where there are Waffenschmiede or Rüstungsschmiede, but the presence of these craftsmen is not strictly necessary.
There is only one armorer's table, located inside the Nilfgaardische Garnison
There are 11 armorer's tables:
There are 8 armorer's tables:
There is only one armorer's table and it is inside the Festung.
There are 9 armorer's tables: