 ... on the right side of the south sight, and with the hand fix a card on the front surface of the north sight, so that its top edge will be at right angles to the divided edge and coincide with the zero mark ; then, sighting over the top of the card,...  Plane Trigonometry, Surveying and Tables - Σελίδα 146των George Albert Wentworth - 1896 - 307 σελίδεςΠλήρης προβολή - Σχετικά με αυτό το βιβλίο
 | Gurley, W. & L. E., Troy, N.Y. - 1857 - 136 σελίδες
...eye piece, on the right side of the south sight, and with the hand fix a card on the front surface of the north sight, so that its top edge will be at...the divided edge, and coincide with the zero mark ; theii sighting over the top of the card, note upon a flag-staff the height cut by the line of sight;... | |
 | Gurley, W. & L. E., Troy, N.Y. - 1871 - 218 σελίδες
...piece, on the right side cf the south sight, and with the hand fix a card on the front surface of tho north sight, so that its top edge will be at right...upon a flagstaff the height cut by the line of sight ; then move the staff up the elevation, and carry the card along the sight until the lino of sight... | |
 | Gurley, W. & L. E., Troy, N.Y. - 1871 - 228 σελίδες
...the right side cf the south sight, and with the hand fix a card on the front surface of tho utirth sight, so that its top edge will be at right angles...upon a flagstaff the height cut by the line of sight ; then move the staff up the elevation, and carry the card along the sight until the lino of sight... | |
 | Aaron Schuyler - 1873 - 536 σελίδες
...and, with the hand, fix a card on the front surface of the north sight, so that its top edge shall be at right angles to the divided edge and coincide...staff up the elevation, and carry the card along the sight until the line of sight again cuts the same height on the staff, read off the degrees and half-degrees... | |
 | Queen, James W., & co., Philadelphia - 1883 - 214 σελίδες
...eye-piece, on the right side of the south sight, and with the hand fix a card on the front surface of the north sight, so that its top edge will be at...upon a flagstaff the height cut by the line of sight ; then, move the staff up the elevation, and carry the card along the sight until the line of sight... | |
 | W. & L.E. Gurley - 1905 - 462 σελίδες
...on the right side of the south ELEVATION, sight, and with the hand hold a card on the front surface of the north sight, so that its top edge will be at right angles with the graduated edge and coincide with the zero mark. Then, sighting over the top of the card, note... | |
 | Gurley, W. & L. E., Troy, N.Y. - 1895 - 490 σελίδες
...on the right side of the south ELEVATION, sight, and with the hand fix a card on the front surface of the north sight, so that its top edge will be at right angles with the divided edge and coincide with the zero mark. Then, sighting over the top of the card, note... | |
 | Gurley, W. & L. E., Troy, N.Y. - 1903 - 460 σελίδες
...the front surface of the north sight, so that its top edge will be at right angles with the graduated edge and coincide with the zero mark. Then, sighting over the top of the card, note upon a flagstaff, held near the compass, the height cut by the line of sight, move the staff up the elevation and carry... | |
 | W. & L.E. Gurley - 1908 - 484 σελίδες
...the north sight, so that its top ANGLES OF edge will be at right angles with the graduated ELEVATION edge and coincide with the zero mark. Then, sighting over the top of the card, note upon a flagstaff, held near the compass, the height cut by the line of sight, move the staff up the elevation and carry... | |
 | Gurley, W. & L. E., Troy, N.Y. - 1914 - 378 σελίδες
...its top Angles of edge will be at right angles with the graduated Elevation edge an d co i nc id e with the zero mark. Then, sighting over the top of the card, note upon a flagstaff, held near the compass, the height cut by the line of sight, move the staff up the elevation and carry... | |
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