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A method of surveying or map making by photography, used also in determining the height and motions of clouds, sea waves, and the like.

ographic cameras, the plates of which may be brought into exactly the same plane, used in surveying and map making. From the differences between two pictures taken at the same moment, measurements in all dimensions of the region may be obtained.

ng altitudes, variously constructed and mounted for different specific uses in astronomy, surveying, gunnery, etc., consisting commonly of a graduated arc of 90º, with an index or vernier, and either plain or telescopic sights, and usually having a plumb line or spirit level for fixing the vertical or horizontal direct…

One who carries and holds a leveling staff, or rod, in a surveying party. G. W. Cable.

tinner iron, with a hole through the flattened head, used to mark stations in underground surveying.

istance of an object of known dimensions, by observing the angle it subtends; especially (Surveying), a graduated rod used to measure the distance of the place where it stands from an instrument having a telescope, by observing the number of the graduations of the rod that are seen between certain parallel wires (stadi…

The place at which an instrument is planted, or observations are made, as in surveying. (d) (Biol.)

The act of surveying; a general view, as from above. Under his proud survey the city lies. Sir J. Denham.

One who surveys or measures land; one who practices the art of surveying.

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

-- Top`o*graph"ic*al*ly, adv. Topographical map. See under Cadastral. -- Topographical surveying. See under Surveying.

cts near our view are thought greater than those of a larger size are more remote. Locke. Surveying nature with too nice a view. Dryden.