Iron Instruments I
Iron Instruments I follows Iron Works in the metallurgy technology branch. Its definition lists two tool unlocks.
Requirement and cost
Section titled “Requirement and cost”Iron Works is the direct prerequisite. The listed cost is 80 red and 15 blue technology points, with no green point cost.
Unlocks
Section titled “Unlocks”
The unlock list contains Iron Axe and Iron Shovel.