Adjustments of the Compass Transit And Level
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In our eReader you can find the full English version of the book. Read Adjustments of the Compass Transit And Level 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 Adjustments of the Compass Transit And Level
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5. B. Level on Telescope. (When the instrument has only a vertical arc and not a full circle. ) On toler- ably level ground stake four points in line and equi- distant (about 100 feet), calling them (say) jD, 7i, E, J~ 3, consecutively. (It is well that D should not be lower than E, nor J :] than Jj. ) Set up the instrument at Ji, and direct the line of sight to a graduated rod held, as 40 METHODS OF ADJUSTMENT.
nearly as may be, vertical on the higher of stakes Z), E (say D), taking a small re...ading d-i. Clamp the telescope, and turning the instrument around, take the reading e t on E. Set up and level the instrument at J~ 3, so that the height of the telescope shall be greater than that corresponding to the readings d 1? e^. Unclamp the tele- scope and direct the line of sight so that, without changing its position, readings e 2, d 2, respectively greater than e 1? dj, are obtained on the rod held successively on E and D. From three times e 2 e\ take d 2 di and divide the result by 2.
What to read after Adjustments of the Compass Transit And Level?
You can find similar books in the "Read Also" column, or choose other free books by Alvin Valentine Lane to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
5. B. Level on Telescope. (When the instrument has only a vertical arc and not a full circle. ) On toler- ably level ground stake four points in line and equi- distant (about 100 feet), calling them (say) jD, 7i, E, J~ 3, consecutively. (It is well that D should not be lower than E, nor J :] than Jj. ) Set up the instrument at Ji, and direct the line of sight to a graduated rod held, as 40 METHODS OF ADJUSTMENT.
nearly as may be, vertical on the higher of stakes Z), E (say D), taking a small re...ading d-i. Clamp the telescope, and turning the instrument around, take the reading e t on E. Set up and level the instrument at J~ 3, so that the height of the telescope shall be greater than that corresponding to the readings d 1? e^. Unclamp the tele- scope and direct the line of sight so that, without changing its position, readings e 2, d 2, respectively greater than e 1? dj, are obtained on the rod held successively on E and D. From three times e 2 e\ take d 2 di and divide the result by 2.
What to read after Adjustments of the Compass Transit And Level?
You can find similar books in the "Read Also" column, or choose other free books by Alvin Valentine Lane to read onlineMoreLess
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