 | Frederick Walter Simms - 1834 - 134 pages
...adjustment is satisfactory. A similar proceeding will also put the vertical line correct, or rather, the point of intersection, when there are two oblique...parallel to the rectified line of collimation. The clips, ii, being open, and the vertical arc clamped, bring the air-bubble of the level to the centre of its... | |
 | Frederick Walter Simms - 1836 - 160 pages
...adjustment is satisfactory. A similar proceeding will also put the vertical line correct, or rather, the point of intersection, when there are two oblique lines instead of a vertical one. turb the vertical arc, and if the bubble resume its former situation hi the middle of the tube, all... | |
 | William Galbraith - 1842 - 216 pages
...not, the same operations must be repeated till it is so. 2. The second adjustment is that which places the level attached to the telescope parallel to the rectified line of collimation. The clips ZZ, being open, and the vertical arc PVP clamped, bring the air-bubble, N', of the level to the centre... | |
 | Basil Jackson - 1847 - 410 pages
...while the telescope is turned round ; and the hairs are not properly adjusted till this is effected. The second adjustment is that which puts the level...parallel to the rectified line of collimation. The clips, ii, being open, and the vertical arc clamped by turning the screw, C, bring the air-bubble of the level... | |
 | Benjamin Pike - 1848 - 356 pages
...adjustment is satisfactory. A similar proceeding will also put the vertical line correct, or rather the point of intersection, when there are two oblique...parallel to the rectified line of collimation. The clips, ii, being open, and the vertical arc clamped, bring the air-bubble of the level to the centre of its... | |
 | Benjamin Pike (Jr.) - 1848 - 482 pages
...adjustment is satisfactory. A similar proceeding will also put the vertical line correct, or rather the point of intersection, when there are two oblique...parallel to the rectified line of collimation. The clips, ii, being open, and the vertical arc clamped, bring the air-bubble of the level to the centre of its... | |
 | John Ainslie - 1849 - 586 pages
...not, the same operations must be repeated till it is so. 2. The second adjustment is that which places the level attached to the telescope parallel to the rectified line of collimation. The clips ZZ, being open, and the vertical arc PVP clamped, bring the air-bubble, X', of the level to the centre... | |
 | Sir Henry Edward Landor Thuillier - 1851 - 826 pages
...adjustment is* satisfactory. A similar proceeding will also put the vertical line correct, or rather, the point of intersection, when there are two oblique...parallel to the rectified line of collimation. The clips, i, i, being open, and the vertical arc clamped, bring the air-bubble of the level to the centre of... | |
 | William Davis Haskoll - 1868 - 252 pages
...adjustment is satisfactory. A similar proceeding will also put the vertical line correct, or, rather the point of intersection, when there are two oblique...air-bubble of the level to the centre of its glass tube, by turning the tangent-screw, o, which being done, reverse the telescope in its Y'S ; that is, turn it... | |
 | William Davis Haskoll - 1886 - 354 pages
...adjustment is satisfactory. A similar proceeding will also put the vertical line correct, or rather the point of intersection, when there are two oblique lines instead of a vertical one. being done, reverse the telescope in its Y'S ; that is, turn it end for end, which must be done carefully... | |
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... perfect in both positions of the telescope, the line of collimation in altitude or depression is correct, but if not, the operation must be repeated carefully, until the adjustment is satisfactory. A similar proceeding will also put the vertical line... 