Plane Tables

Plane Tables

A plane table is a surveying instrument that is used for mapping and measuring land. It consists of a flat table, usually made of wood or metal, with a hinged alidade or sighting device that can be rotated and tilted to measure angles and distances. The table is usually mounted on a tripod, and the surveyor uses a plumb bob to ensure that it is level. The surveyor then uses the alidade to sight on various points in the landscape, and records the angles and distances on the table. By triangulating these measurements, the surveyor can create an accurate map of the area being surveyed. Plane tables were first used in the 16th century, but they became more widely used in the 19th century when they were used to map out the American West. They were particularly useful in areas where there were no existing maps, as they allowed surveyors to create accurate maps from scratch. Plane tables were also used extensively during World War I and World War II, as they were portable and could be used in the field. Today, plane tables are still used in some areas, particularly in developing countries where there may be a lack of modern surveying equipment. However, they have largely been replaced by electronic instruments such as the total station and GPS.

surveying, mapping, alidade, triangulation, total station

— Mark Lopez

CITATION : "Mark Lopez. 'Plane Tables.' Design+Encyclopedia. https://design-encyclopedia.com/define/plane-tables?E=383905 (Accessed on October 14, 2026)"