Machine Tools is an advance in Civilization: Call to Power.
Summary[]
Third in the Mechanical Discoveries Advances, Machine Tools allows for the creation of the Ship of the Line, a powerful warship.
Great Library entry[]
Before Machine Tools, craftsmen hand-tooled all parts, with each part varying considerably. For high performance mechanical clocks, such variation was intolerable. So mechanics developed Machine Tools, metal cutting lathes, dies, and screw machines which turned out nearly identical parts time after time. Not only did this result in lower repair costs and cheaper products, but with the new machine tools, the worker lost his idiosyncratic ways. The factory loomed near.