 | Frederick Walter Simms - 1834 - 124 pages
...diameter is measured and when his altitude is taken with an artificial horizon, the attached darkglasses ought not to be used : instead of them, those which...of the index, it must be removed, for the time, by taking out the finger- screw, which fastens it to the body of the circle. " If it should happen that... | |
 | Frederick Walter Simms - 1834 - 134 pages
...those errors, be less distinct than the latter. " In taking distances, when the position does not vajry from the vertical above thirty or forty degrees, the...of the index, it must be removed, for the time, by taking out the finger- screw, which fastens it to the body of the circle. " If it should happen that... | |
 | Frederick Walter Simms - 1844 - 178 pages
...deduced severally from such observations, will be the true latitude ; but in these there should be no application of index error, for that being constant,...of the index, it must be removed, for the time, by taking out the finger-screw, which fastens it to the body of the circle. " If it should happen that... | |
 | Benjamin Pike - 1848 - 356 pages
...observations, will be the true latitude ; but in these there should be no application of index-error, for that being constant, the result would in some...of the index, it must be removed, for the time, by taking out the finger-screw, which fastens it to the body of the circle. If it should happen that two... | |
 | Benjamin Pike (Jr.) - 1848 - 482 pages
...observations, will be the true latitude ; but in these there should be no application of index-error, for that being constant, the result would in some...of the index, it must be removed, for the time, by taking out the finger-screw, which fastens it to the body of the circle. If it should happen that two... | |
 | John Fry Heather - 1849 - 202 pages
...deduced severally from such observations, will be the true latitude ; but in these there should be no application of index error, for that being constant,...of the index, it must be removed, for the time, by taking out the finger screw, which fastens it to the body of the circle. " If it should happen that... | |
 | John F. Heather - 1849 - 208 pages
...thereby. " When both the reflected and direct images require to he darkened, as is the case when the sun-s diameter is measured, and when his altitude is taken...of the index, it must be removed, for the time, by taking out the finger screw, which fastens it to the body of the circle. " If it should happen that... | |
 | Sir Henry Edward Landor Thuillier - 1851 - 826 pages
...observations, will be the true latitude ; but in these there should be no application of index-error, for that being constant, the result would in some...of the index, it must be removed, for the time, by taking out the finger-screw, which fastens it to the body of the circle. " If it should happen that... | |
 | John Fry Heather - 1851 - 208 pages
...application of index error, for that being constant, the result would in some measure be vitiated thereby. u When both the reflected and direct images require...of the index, it must be removed, for the time, by taking out the finger screw, which fastens it to the body of the circle. " If it should happen that... | |
 | Benjamin Pike - 1856 - 412 pages
...forty degrees, the handles which are attached to the circle are generally most conveniently xised ; but in those which incline more to the horizontal,...of the index, it must be removed, for the time, by taking out the finger-screw, which fastens it to the body of the circle. If it should happen that two... | |
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... of them, those which apply to the eye-end of the telescope will answer much better ; the former having their errors magnified by the power of the telescope, will, in proportion to this power, and those errors, be less distinct than the latter. " In... 
