During the Monk Quest "The Pursuit of Power", you are required to insert an aetheriometer into the ground. However, the name of the item already contains a 'the', therefore, the previous the is redundant. The exact line is
"You set up the the outdated aetheriometer."
With the bolded part as the item name. Maybe eliminate the 'the' from the name so it just becomes
"You set up the outdated aetheriometer."