from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An optical instrument consisting of a small mounted telescope rotatable in horizontal and vertical planes, used to measure angles in surveying, meteorology, and navigation.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A surveying instrument, consisting of a small mounted telescope, used to measure horizontal and vertical angles.
from the GNU version of the Collaborative International Dictionary of English
- 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.
from The Century Dictionary and Cyclopedia
- n. A surveying-instrument for measuring horizontal angles upon a graduated circle.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a surveying instrument for measuring horizontal and vertical angles, consisting of a small telescope mounted on a tripod
The spot was actually located and determined by theodolite from the base camp, knowing the height of the mountain.
Thus the theodolite was the only instrument retained, and the camera, photographic films (exposed and unexposed), hypsometer, thermometers, rifle, ammunition and other sundries were all thrown away.
The theodolite was a nine-inch one and weighed many pounds.
On shore, observers will be equipped with binoculars and an instrument called a theodolite, which will allow them to scan the horizon and calculate distance to the whales, and the whales 'latitude and longitude.
Employed by the Board of Ordnance, William Roy began mapping the Highlands in 1747, pushing a surveyor's wheel and using a simple kind of theodolite called a circumferentor.
In post-Culloden Scotland the map-makers had used a small, tripod-mounted telescope or prototype theodolite to measure sight-lines from landmark to landmark.
We then used a theodolite to survey the positions of the stake and mark appromiately 100-ft steps back towards the circle.
All of these various methods came together in what most of us today think of as the quintessential surveying tool, the theodolite, a single device that allows a surveyor to both take bearings and measure elevations.
The process required teams to coordinate with each other from opposite sides of the canyon, with a rodman, or rigger, perched on one wall holding a fifteen-foot pole with a flag at one end—used to probe to the back of the caves perforating the rock—while a surveyor across the river fixed him in the crosshairs of his camera-equipped theodolite.
To assess the first needs only a time series from tape measure and theodolite survey old-school or aerial photos.