 | Frederick Walter Simms - 1834 - 124 pages
...half of their difference being the index error. Such a method of observing angles is decidedly the best, since the mean of any equal number of observations...error that may exist in the adjustment of the vernier, or zero of altitude. The theodolite, as constructed in the manner we have described, is not inconveniently... | |
 | Frederick Walter Simms - 1844 - 190 pages
...one-half of their difference being the index error. Such a method of observing angles is decidedly the best, since the mean of any equal number of observations taken with the telescope reversed in its T's, must be free from the effects of any error that may exist in the adjustment of the vernier, or... | |
 | Basil Jackson - 1847 - 410 pages
...one half of the difference being the index error. Such a method of observing angles is decidedly the best, since the mean of any equal number of observations, taken with the telescope reversed in its Ys, must be free from the effects of any error that may exist in the adjustment of the vernier or zero... | |
 | Benjamin Pike - 1848 - 356 pages
...half of their difference being the index error. Such a. method of observing angles is decidedly the best, since the mean of any equal number of observations...error that may exist in the adjustment of the vernier, or zero of altitude. The theodolite, as constructed in the manner we have described, is not inconveniently... | |
 | Benjamin Pike (Jr.) - 1848 - 482 pages
...half of their difference being the index error. Such a method of observing angles is decidedly the best, since the mean of any equal number of observations...error that may exist in the adjustment of the vernier, or zero of altitude. The theodolite, as constructed in the manner we have described, is not inconveniently... | |
 | Sir Henry Edward Landor Thuillier - 1851 - 826 pages
...one-half of their difference being the index error. Such a method of observing angles is decidedly the best, since the mean of any equal number of observations...error that may exist in the adjustment of the vernier, or zero of altitude. The Theodolite, as constructed in the maiiner we havedescribed, is not inconveniently... | |
 | William Davis Haskoll - 1868 - 252 pages
...half of their difference being the index error. Such a method of observing angles is decidedly the best, since the mean of any equal number of observations taken with the telescope reversed in its T'S must be free from the effects of any error that may exist in the adjustment of the vernier, or... | |
 | William Davis Haskoll - 1886 - 354 pages
...half of their difference being the index error. Such a method of observing angles is decidedly the best, since the mean of any equal number of observations...error that may exist in the adjustment of the vernier, or zero of altitude. The theodolite, as constructed in the manner we have described, is not inconveniently... | |
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... determined by repeating the observation of an altitude or depression in the reversed positions, both of the telescope and the vernier plate : the two readings will have equal and opposite errors, one half of their difference being the index error. 