An instrument for ascertaining the position of a line or plane with reference to its azimuth and altitude; a declinator.
| 单词 | θ7424 |
| 释义 | the world > the earth > earth sciences > geography > map-making > surveying > [noun] > surveying instruments > for measuring inclination or gradient (5) clinatory1659 An instrument for ascertaining the position of a line or plane with reference to its azimuth and altitude; a declinator. chain inclinometera1877 an instrument for indicating the inclination of a surveyor's chain. Abney level1883 a small hand-held instrument used in surveying for the measurement of slopes and vertical angles, invented by Abney in the 1870s. Abney clinometer1885 = Abney level n. gradiometer1899 Any of various surveying instruments used for setting out gradients or for measuring the gradient of a slope (see quots.). |
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