European Post Mill

Timeline

1. c. 1180–1300England · EnglandThe post mill's structure was standardized: the wooden mill body was mounted atop a crossbeam on a central post, and by means of a lever or tailpole the entire body rotated around the post to face the wind, replacing fixed-sail mills and improving wind-energy efficiency.
2. c. 1300–1600Low Countries · NetherlandsThe post mill spread rapidly to Flanders and the Netherlands; besides grinding grain it was widely used for draining marshes and reclaiming land, becoming the core power device of hydraulic engineering and agricultural expansion in the Low Countries.
3. c. 1400–1700Northwestern Europe · Northwestern EuropeThe post mill became standard in the northwestern European countryside, with functions extended to sawing wood, pressing oil, papermaking and other processing industries; Germany, Denmark, Poland and elsewhere developed locally distinctive post mill variants, numbering in the tens of thousands.
4. c. 1600–1850Northwestern Europe · Northwestern EuropeThe structurally sturdier tower (smock/tower) mill, in which only the sails rotate, gradually replaced the post mill as the mainstream new construction; after the Industrial Revolution steam mills further reduced its practical value, and post mills gradually withdrew from production, surviving only as cultural landscape remains.