Post mill

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

The post mill is the earliest type of European windmill. Its defining feature is that the whole body of the mill that houses the machinery is mounted on a single central vertical post. The vertical post is supported by four quarter bars. These are struts that steady the central post.

Excerpt from the Wikipedia article “Post mill”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: SeptemberWoman, CC BY-SA 3.0, via Wikimedia Commons.