The T-Square is an accessory that adds 3 points to your Building skill when equipped in your Accessory Bar. You can find it in the Accessories section of your inventory when it is not equipped. Unlike most skill-enhancing accessories, there are no lower-tier versions of this item.
How to Obtain
How to Use
To equip this accessory, drag it into an active slot in your Accessory Bar.
When first implemented, the T-Square and other third-tier/onyx accessories dropped as loot from chests.