| 单词 | alidade |
| 例句 | One morning when Ishmael was eight years old a pair of surveyors had showed up with their transits and alidades and knotted red flagging everywhere. Snow Falling on Cedars: A Novel 1994-09-12T00:00:00Z The complete instrument would also have had a rotating pointer, called an alidade, mounted on a pin running through the central hole. The oldest mariner’s astrolabe yields to scientific scrutiny 2017-10-26T04:00:00Z An additional article of the sketcher's equipment is a holder for his pencils, alidade, eraser, knife, pins, etc. Manual of Military Training Second, Revised Edition The second lesson takes up the preparation of the stride scale on the alidade and the different kinds of maps, made in military sketching. Military Instructors Manual It consists of a frame in the form of an octant having a graduated scale upon its arc, and an index arm, or alidade pivoted at its apex. The Gutenberg Webster's Unabridged Dictionary Section P and Q This axle is provided with an endless screw that gears with a toothed sector, and the latter controls the rotatory axis of the alidade. Scientific American Supplement, No. 363, December 16, 1882 Close by stood an alidade, an instrument for measuring angles. Historical Miniatures Problem.—By use of the slope scale on the sketch board and the contour interval scale on the alidade, each man will secure vertical data on the flat sketch made in the fourth lesson. Military Instructors Manual The alidade is a triangular ruler with one or more working scales on it beside other measurements. Military Instructors Manual Time must be allowed the men to make their stride scales and to paste or transfer them to their alidades. Military Instructors Manual The alidades themselves are provided with a button which disengages the toothed sector from the endless screw, and permits of their being turned to a mark made on the table. Scientific American Supplement, No. 363, December 16, 1882 Always carry several large-headed pins using one at your present station and resting the side of the alidade against it, swinging the other end for sighting. Military Instructors Manual One of the telescopes is then placed over its alidade and moves with it; and the apparatus thus comprehends only a system of synchronous movements. Scientific American Supplement, No. 363, December 16, 1882 |
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