Theodolite

Theodolite
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]


The Collaborative International Dictionary of English. 2000.

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  • Theodolite — Théodolite Théodolite Un théodolite est un instrument de géodésie complété d’un instrument d’optique, mesurant des angles dans les deux plans horizontal et vertical afin de déterminer une direction. Il est utilisé pour réaliser les mesures d’une… …   Wikipédia en Français

  • Théodolite — Un théodolite est un instrument de géodésie complété d’un instrument d’optique, mesurant des angles dans les deux plans horizontal et vertical afin de déterminer une direction. Il est utilisé pour réaliser les mesures d’une triangulation :… …   Wikipédia en Français

  • théodolite — [ teɔdɔlit ] n. m. • 1704 « instrument d arpentage »; lat. sc. theodolitus (1571); o. i. ♦ Sc. Appareil, instrument de visée muni d une lunette, qui sert en géodésie à mesurer les angles horizontaux (⇒ azimut) et verticaux (⇒ site), à lever les… …   Encyclopédie Universelle

  • theodolite — 1570s, of unknown origin (see OED for discussion) …   Etymology dictionary

  • theodolite — ► NOUN ▪ a surveying instrument with a rotating telescope for measuring horizontal and vertical angles. ORIGIN Latin theodelitus …   English terms dictionary

  • theodolite — [thē äd′ə līt΄] n. [ModL theodelitus: prob. invented ( c. 1571) by Leonard Digges, Eng mathematician] a surveying instrument used to measure vertical and horizontal angles theodolitic [thē äd΄ə lit′ik] adj …   English World dictionary

  • Theodolite — A theodolite (IPA en|θiːˈɒdəlаɪt) is an instrument for measuring both horizontal and vertical angles, as used in triangulation networks. It is a key tool in surveying and engineering work, particularly on inaccessible grounds, but theodolites… …   Wikipedia

  • théodolite — (té o do li t ) s. m. Instrument d astronomie et de géodésie, qui sert à mesurer directement les angles réduits à l horizon, et les distances zénithales.    Théodolite autographe, ou planchette photographique, instrument à l aide duquel on… …   Dictionnaire de la Langue Française d'Émile Littré

  • theodolite — theodolitic /thee od l it ik/, adj. /thee od l uyt /, n. 1. Survey. a precision instrument having a telescopic sight for establishing horizontal and sometimes vertical angles. Cf. transit (def. 6). 2. phototheodolite. [1565 75; < NL theodolitus …   Universalium

  • theodolite — UK [θɪˈɒdəlaɪt] / US [θɪˈɑdəˌlaɪt] noun [countable] Word forms theodolite : singular theodolite plural theodolites a piece of equipment that a surveyor uses for measuring angles …   English dictionary

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