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Theodolite   Listen
noun
Theodolite  n.  An instrument used, especially in trigonometrical surveying, for the accurate measurement of horizontal angles, and also usually of vertical angles. It is variously constructed. 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.






Collaborative International Dictionary of English 0.48








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"Theodolite" Quotes from Famous Books



... instrument for ascertaining the heights of the Lunar mountains by the barometric pressure under which water boils, a sextant to measure the altitude of the Sun, a theodolite for taking horizontal or vertical angles, telescopes, of indispensable necessity when the travellers should approach the Moon,—all these instruments, carefully examined, were found to be still in perfect ...
— All Around the Moon • Jules Verne

... them. As one of the chainmen was climbing over a gate one day, a labourer made at him with a pitchfork, and ran it through his clothes into his back; other watchers running up, the chainman, who was more stunned than hurt, took to his heels and fled. But that mysterious-looking instrument—-the theodolite—-most excited the fury of the natives, who concentrated on the man who carried it their fiercest execrations and ...
— Lives of the Engineers - The Locomotive. George and Robert Stephenson • Samuel Smiles

... degree of latitude between Gottingen and Altona. In geodesy he invented the heliotrope, by which the sunlight reflected from a mirror is used as a "sight" for the theodolite at a great distance. Through Professor William Weber he was introduced to the science of electro-magnetism, and they devised an experimental telegraph, chiefly for sending time signals, between the Observatory and the Physical ...
— Heroes of the Telegraph • J. Munro

... following their prey. But there was one source of profound satisfaction,—the catamount had been killed. Mr. Colvin, the triangulating surveyor of the Adirondacks, killed him in his last official report to the State. Whether he despatched him with a theodolite or a barometer does not matter: he is officially dead, and none of the travelers can kill him any more. Yet he has served them a ...
— Baddeck and That Sort of Thing • Charles Dudley Warner

... given us a complete meteorological outfit. Among the instruments belonging to the Fram I may mention a pendulum apparatus, an excellent astronomical theodolite, and a sextant. Lieutenant Prestrud studied the use of the pendulum apparatus under Professor Schiotz and the use of the astronomical theodolite under Professor Geelmuyden. We had in addition several sextants and artificial horizons, both glass and mercury. We had binoculars of all sizes, from the ...
— The South Pole, Volumes 1 and 2 • Roald Amundsen

... that year was a stout and very short, plethoric person. When he stated that he preferred surveying to fishing, as it was going to benefit others so much, and that he was familiar with the joys of service, he was taken promptly at his word. It was a hot summer. The theodolite was a nine-inch one and weighed many pounds. We had climbed the face of a very steep mountain called Cape Mugford, some three thousand feet high—every inch of which distance we had to mount from dead sea-level. When at last Israel arrived on the summit, he ...
— A Labrador Doctor - The Autobiography of Wilfred Thomason Grenfell • Wilfred Thomason Grenfell

... I3. A marine barometer, by ditto. 14. A wind gage, invented by Dr Lind of Edinburgh, and made by Mr Nairne. 15. Two portable barometers, made by Mr Burton. 16. Six thermometers, by ditto. 17. A theodolite, with a level, and a Gunter's chain, by ditto. 18. An apparatus for trying the heat of the sea-water at different depths. 19. Two time-keepers, one made by Mr Larcum Kendal, on Mr Harrison's principles, and the ...
— A General History and Collection of Voyages and Travels, Volume 14 • Robert Kerr



Words linked to "Theodolite" :   surveyor's instrument, transit, surveying instrument, alidade



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