TERMIUM Plus®

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HORIZONTAL COLLIMATION ERROR [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-08-08

English

Subject field(s)
  • Surveying
OBS

Horizontal collimation error exists when the optical axis of the theodolite is not exactly perpendicular to the telescope axis.

OBS

The effect of a vertical deviation of the collimation axis is constant. It is impossible to determine separately a vertical collimation axis error and a zero error of the vertical circle. Thus, the term collimation error refers only to the horizontal deviation of the collimation axis...

French

Domaine(s)
  • Arpentage
DEF

Défaut de perpendicularité entre l'axe de visée d'une lunette et l'axe secondaire de celle-ci.

OBS

Ce défaut est éliminé par le double retournement.

Spanish

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