alidade

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Related to alidades: telescopic alidade

alidade

(al -ă-dayd) See astrolabe.

alidade

[′al·ə‚dād]
(engineering)
An instrument for topographic surveying and mapping by the plane-table method.
Any sighting device employed for angular measurement.

alidade

The part of a surveying instrument which consists of a sighting device, with index, and reading or recording accessories.
References in periodicals archive ?
For detailed survey plane tables of Morinoni and Kraft trademarks has been used, fitted with peep-sight alidade, first with diopter, later with a telescope.
Ao que tudo indica, os papeis eram bem definidos em relacao a sexu alidade.