| Provided with the local resource of timber Sawmill reduces the costs of the wooden buildings and ships even greater than the Joiner's Shop. City sawmill production can be used for the upgrading of missle weapon to the basic level. Also Sawmill moderately improves the trade. But the trade bonus is much higher only during the winter, the peak logging season.
Early sawmills simply adapted the whipsaw to mechanical power, generally driven by a water wheel to speed up the process. The circular motion of the wheel was changed to back-and-forth motion of the saw blade by a Connecting rod known as a pitman (thus introducing a term used in many mechanical applications). A pitman is similar to a crankshaft, but in reverse