| Asiatic Society of Bengal - 1807 - 458 pages
...the want of ' division into minutes, ' the shaking and wearing ' of their axes, the dis' placement of the centres ' of the circles, and the ' shifting...planes of ' the instruments: he ' concluded that the rea' son why the determina' tions of the ancients, ' such as HIPPARCHUS 'and PTOLEMY proved ' inaccurate,... | |
| Asiatic Society of Bengal - 1885 - 772 pages
...in 1728. Finding that brass instruments which were in use in his time did not come up to his ideas of accuracy, " because of the smallness of their size,...Ptolemy, proved inaccurate must have been of this kind ; he therefore constructed in Dar-ul-khelafet, Shah Jehanabad [Delhi]," instruments of his own invention,... | |
| Robert George Hobbes - 1893 - 594 pages
...want of division into minutes, the shaking and wearing of their axes, the displacement of the centre of the circles, and the shifting of the planes of the instruments, he erected the existing great works of stone and lime ; of perfect stability, with attention to the rules... | |
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