Upgrade (Progressive Automation)

Upgrades, specifically Tier Upgrades, are a set of four items in Progressive Automation. They are consumed to increase the effective range of Progressive Automation machines. Each upgrade increases the range by 1 block (by default; configurable). There is no limit on the number of upgrades that can be placed in a machine. Upgrades are installed in machines by placing the Upgrade items in the Upgrade slot in the machine's GUI.

The tier of Upgrade must correspond to the tier of machine; wooden machines consume Wooden Upgrades, stone machines consume Stone Upgrades, etc.

When a machine is picked up with a PA Wrench, consumed upgrades are retained in it. When a machine is broken otherwise, all installed upgrades drop as items.