TERMIUM Plus®

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HORIZONTAL HAIR [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2019-07-10

English

Subject field(s)
  • Surveying Instruments
  • Mathematical Geography
  • Optical Instruments
CONT

Rotate the reticle in the telescope tube until the horizontal hair remains on the point as the telescope is turned.

Key term(s)
  • leveling hair

French

Domaine(s)
  • Instruments d'arpentage
  • Géographie mathématique
  • Instruments d'optique
DEF

Trait horizontal du réticule d'une lunette d'un instrument topographique ou géodésique.

OBS

[Le fil niveleur] se projette horizontalement sur la mire.

Spanish

Save record 1

Record 2 2017-01-03

English

Subject field(s)
  • Surveying Instruments
CONT

The vertical hair or hairs are meant for checking the verticality of the staff or target. The middle horizontal hair corresponds to the collimation line. The upper and lower short horizontal lines are called the upper and lower stadia.

French

Domaine(s)
  • Instruments d'arpentage
DEF

[...] trait central du réticule perpendiculaire au fil niveleur.

CONT

La lunette [...] comporte généralement un fil vertical et trois fils horizontaux : celui du milieu est dit fil niveleur, les deux autres sont dits fils stadimétriques.

Spanish

Save record 2

Record 3 1999-05-10

English

Subject field(s)
  • Scientific Instruments
CONT

For angle measuring or line prolongation, the foresight is the angle measurement on the graduated horizontal circle of the instrument(set or to be read and recorded) when the vertical cross hair of the instrument is visually coinciding with the foresight point or with a marker in the vertical plane through the foresight point and the center of the instrument.

French

Domaine(s)
  • Instruments scientifiques
OBS

point de visée. [...] la lunette [d'un théodolite] peut être dirigée à volonté sur un point de visée [...]

Spanish

Save record 3

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