Plane table

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

A plane table (plain table prior to 1830) is a device used in surveying, site mapping, exploration mapping, coastal navigation mapping, and related disciplines to provide a solid and level surface on which to make field drawings, charts and maps.

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

Image: US Army Signal Corps, Public domain, via Wikimedia Commons.