Engineers' Surveying Instruments, Their Construction, Adjustment, And Use
Engineers' Surveying Instruments, Their Construction, Adjustment, And Use
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In our eReader you can find the full English version of the book. Read Engineers' Surveying Instruments, Their Construction, Adjustment, And Use Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Engineers' Surveying Instruments, Their Construction, Adjustment, And Use
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To quickly assess the difficulty of the text, read a short excerpt:
It is con- venient, though not necessary nor quite as accurate, to set the vernier to read zero at the beginning, instead of reading it where it may chance to be.
130. Angles Measured More Accurately. It sometimes happens that an engineer desires an angle with the utmost accuracy. There are two methods of making the observations when extreme accuracy is desired; viz., ly series and fy repetition. One or the other of these methods is always used in measuring the principal an- gles of a geodetic ...triangulation. The principles in- volved are useful in less accurate work.
181. By Series. Sight upon the first station, and read both verniers to eliminate eccentricity. Sight upon Digitized by^OOQlC Il8 THE TRANSIT. [CHAP. VII the next station to the right, and read as before. Con- tinue around the horizon, reading upon each station, and close by reading upon the first station again. If the last reading is the same as the first, it proves that the instrument did not slip or get moved. Reverse in altitude and azimuth, turn on the lower axis a little to eliminate personal bias, and read upon the first station.
What to read after Engineers' Surveying Instruments, Their Construction, Adjustment, And Use?
You can find similar books in the "Read Also" column, or choose other free books by Ira Osborn Baker to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
It is con- venient, though not necessary nor quite as accurate, to set the vernier to read zero at the beginning, instead of reading it where it may chance to be.
130. Angles Measured More Accurately. It sometimes happens that an engineer desires an angle with the utmost accuracy. There are two methods of making the observations when extreme accuracy is desired; viz., ly series and fy repetition. One or the other of these methods is always used in measuring the principal an- gles of a geodetic ...triangulation. The principles in- volved are useful in less accurate work.
181. By Series. Sight upon the first station, and read both verniers to eliminate eccentricity. Sight upon Digitized by^OOQlC Il8 THE TRANSIT. [CHAP. VII the next station to the right, and read as before. Con- tinue around the horizon, reading upon each station, and close by reading upon the first station again. If the last reading is the same as the first, it proves that the instrument did not slip or get moved. Reverse in altitude and azimuth, turn on the lower axis a little to eliminate personal bias, and read upon the first station.
What to read after Engineers' Surveying Instruments, Their Construction, Adjustment, And Use?
You can find similar books in the "Read Also" column, or choose other free books by Ira Osborn Baker to read onlineMoreLess
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