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alidade    
n. 指方规,照准仪

指方规,照准仪

alidade
n 1: surveying instrument consisting of the upper movable part
of a theodolite including the telescope and its attachments
[synonym: {alidade}, {alidad}]
2: surveying instrument used with a plane table for drawing
lines of sight on a distant object and for measuring angles
[synonym: {alidade}, {alidad}]

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  • A physician-led value-based care company | Aledade
    Aledade is a national leader empowering primary care organizations with actionable insights to improve patient health and support business sustainability
  • Alidade - Wikipedia
    The alidade is the part of a theodolite that rotates around the vertical axis, and that bears the horizontal axis around which the telescope (or visor, in early telescope-less instruments) turns up or down
  • The Marine Alidade: A Vital Tool for Oceanic Expeditions
    The alidade, derived from the Arabic term “al-idada,” which means “as far as the eye can see,” was a crucial navigation tool for early seafarers It’s a device equipped with a sight used for determining directions or measuring angles
  • Alidade | instrument | Britannica
    The alidade made it possible to use the astrolabe for surveying applications—e g , determining the height of a mountain Most astrolabes also had one or more plates (called climates) that were engraved with coordinate lines for different latitudes…
  • ALIDADE Definition Meaning - Merriam-Webster
    The meaning of ALIDADE is a rule equipped with simple or telescopic sights and used for determination of direction
  • Telescopic Alidade - Smithsonian Institution
    The term alidade can refer to the sighting mechanism of any instrument used for surveying or navigation In this catalog the term refers to the sighting mechanism used with a plane table for topographical work—that is, for mapping the surface features of the earth
  • What Is an Alidade? - AllTheScience
    An alidade is a measuring instrument of ancient origin that employs line-of-sight to determine the positional characteristics of a remote object in relation to the observer
  • alidade - Glossary of Meteorology
    The clinometer is a portable form of alidade frequently used with a ceiling projector to determine the height of clouds An alidade usually measures the elevation angle only; a theodolite measures azimuth as well
  • Alidade - grokipedia. com
    An alidade is a sighting instrument consisting of a straightedge equipped with aligned sights or a telescope, used primarily in surveying, astronomy, and navigation to measure angles and directions by aligning a line of sight with a target and reading a corresponding scale
  • What is an alidade, and how is it used?
    An alidade is a key instrument in plane table surveying used for sighting and drawing directional lines to ground objects It is placed on the map, aligned with a feature, and helps the surveyor draw rays that represent directions





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