ALIDADE

Alidade

An alidade or a turning board is a device that allows one to sight a distant object and use the line of sight to perform a task. This task can be, for example, to draw a line on a plane table in the direction of the object or to measure the angle to the object from some reference point. Angles measured can be horizontal, vertical or in any chosen plane. The alidade's primary use is for creating maps in the horizontal plane.

The above text is a snippet from Wikipedia: Alidade
and as such is available under the Creative Commons Attribution/Share-Alike License.

alidade

Noun

  1. A sighting device used for measuring angles.


The above text is a snippet from Wiktionary: alidade
and as such is available under the Creative Commons Attribution/Share-Alike License.

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