TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

CIRCULAR LEVEL [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2015-04-17

English

Subject field(s)
  • Surveying Instruments
  • Mining Equipment and Tools

French

Domaine(s)
  • Instruments d'arpentage
  • Outillage et équipement (Exploitation minière)
DEF

Niveau simple, de forme circulaire, qui sert principalement à dégrossir la verticalité de l'axe principal de certains instruments munis d'autre part, le plus souvent, d'un autre niveau plus précis, dont la nivelle est soit cylindrique, soit torique. Il est à bulle d'air.

Spanish

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Record 2 2008-12-16

English

Subject field(s)
  • Hand Tools
  • Mathematical Geography
  • Construction Tools
DEF

A spirit level that allows for the leveling of planes in two dimensions ...

OBS

Bull's eye levels are used primarily by carpenters in construction, but can also be found as features of compasses or other devices that need to be kept from tipping in certain directions (whether it be for functionality or precision of measurements). Small bull's eye levels are also found incorporated into tripods.

OBS

Another name for a Bull's eye level is a "circular bubble" which is the name used by surveyors in the United Kingdom. Surveying instruments such as theodolites (transits) and total stations often have a circular bubble as well as a tubular level or "plate level." The circular bubble is used to roughly level the instrument in two dimensions and then the plate level, being more precise, is used to level the instrument more precisely in each dimension separately by leveling the plate level, then spinning the instrument 90 degrees and leveling the plate level again.

French

Domaine(s)
  • Outillage à main
  • Géographie mathématique
  • Outils (Construction)
CONT

Tous les instruments topographiques disposent de la possibilité de repérage du plan horizontal et de la verticale de station. [...] L'embase de l'instrument comprend un système de fixation au trépied, constitué d'un triangle à vis calantes. L'axe principal de l'instrument est rendu vertical lors de la mise en station par référence à une nivelle; la position de cet axe peut être matérialisée au sol par l'intermédiaire d'un fil à plomb ou d'un plomb optique. L'horizontalité de l'appareil est assuré, en général, par un niveau à bulle sphérique.

OBS

Niveau à bulle, à bulle d'air, ou nivelle : tube de verre rempli d'un liquide contenant une bulle qui vient se placer entre des repères quand l'instrument est à l'horizontale.

Spanish

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