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theodolite    
n. 经纬仪

经纬仪

theodolite
n 1: a surveying instrument for measuring horizontal and
vertical angles, consisting of a small telescope mounted on
a tripod [synonym: {theodolite}, {transit}]

Theodolite \The*od"o*lite\, n. [Probably a corruption of the
alidade. See {Alidade}.]
An instrument used, especially in trigonometrical surveying,
for the accurate measurement of horizontal angles, and also
usually of vertical angles. It is variously constructed.
[1913 Webster]

Note: The theodolite consists principally of a telescope,
with cross wires in the focus of its object glass,
clamped in Y's attached to a frame that is mounted so
as to turn both on vertical and horizontal axes, the
former carrying a vernier plate on a horizontal
graduated plate or circle for azimuthal angles, and the
latter a vertical graduated arc or semicircle for
altitudes. The whole is furnished with levels and
adjusting screws and mounted on a tripod.
[1913 Webster]


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  • Theodolite - Wikipedia
    Theodolite A direct-readout theodolite, manufactured in the Soviet Union in 1958 and used for topographic surveying A theodolite ( θiˈɒdəˌlaɪt ) [1] is a precision optical instrument for measuring angles between designated visible points in the horizontal and vertical planes
  • Theodolites | How Does a Theodolite Work | Theodolite vs Transit | How . . .
    The theodolite's base is threaded for easy mounting on a tripod How Does a Theodolite Work? A theodolite works by combining optical plummets (or plumb bobs), a spirit (bubble level), and graduated circles to find vertical and horizontal angles in surveying
  • Theodolite: Types, Advantages, and Uses in Surveying
    A theodolite is a precision instrument used in surveying and engineering to measure horizontal and vertical angles It plays a crucial role in construction, topographic surveys, and mapping by helping surveyors establish precise locations and angles on the earth’s surface
  • Theodolite Surveying Explained - Bench Mark USA
    Learn when to use a theodolite for surveying Compare theodolites, total stations, and GNSS systems for accuracy, layout, and field workflows
  • What is Theodolite? Definition, Types and Uses and Application
    Theodolite operation is based on the exact measurement of angles and their geometry This is a crucial instrument for surveying, engineering, and building since it enables precise measurements of angles and distances
  • How to Use a Theodolite? (Complete Guide) For Civil 2026
    Theodolite is one of the most essential surveying instruments widely used in civil engineering and construction projects It is primarily used to measure horizontal and vertical angles with high precision This blog post is a complete guide on how to use a theodolite effectively Whether you are a beginner or an experienced civil engineer, this guide will help you understand the components
  • Theodolite: Definition, Parts Labeled Diagram - Mapping Around
    Theodolite definition explained with a labelled diagram, main parts, and working principle in simple terms Understand how this surveying instrument measures horizontal and vertical angles
  • What is Theodolite? Types, Errors, Measurements Difference with Total . . .
    Learn about theodolite, its parts, types, uses, temporary adjustments, measurement of horizontal and vertical angles, common errors and difference with total station Essential surveying instrument explained simply
  • An Introduction to Theodolites | Engineer Supply - EngineerSupply
    The theodolite is a type of precision instrument that accurately captures horizontal and vertical angles Using these measurements, surveyors and others can accurately determine the position of objects in a given area
  • What is Theodolite? Uses of theodolite in surveying
    What is Theodolite? Theodolite is a measurement instrument utilized in surveying to determine horizontal and vertical angles with the tiny low telescope that may move within the horizontal and vertical planes It is an electronic machine which looks sort of a tiny telescope





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