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" ... the object he views. There is no small speculum, but the magnifiers are applied immediately to the first focal image. From the opening of the telescope, near the place of the eye glass, a speaking-pipe runs down to the bottom of the tube, where it... "
Dictionary of the Mathematical and Physical Sciences, According to the ... - Page 490
edited by - 1823 - 576 pages
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Pantologia. A new (cabinet) cyclopędia, by J.M. Good, O. Gregory ..., Volume 11

John Mason Good - 1819
...observer being placed ia a seat C, suspended at the end of it, with his back towards the object he views. There is no small speculum, but the magnifiers...the telescope, near the place of the eye-glass, a speaking pipe runs down to the bottom of the tube, where it goes into a turning joint; and after several...
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A Manual of Natural and Experimental Philosophy: Being the ..., Volume 2

Charles Frederick Partington - Science - 1828
...tube, it is inclined, so as to throw the image upwards, through an aperture for that purpose, to no, runs down to the bottom of the tube, where it goes into a turning joint, thence into a drawing tube, and out of this into another turning joint, from whence it proceeds by...
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Family Magazine: Or Monthly Abstract of General Knowledge, Volume 1

1834
...the observer being placed in a seat suspended at the end of it, wilh his hack towards the object he views. There is no small speculum; but the magnifiers...down to the bottom of the tube, where it goes into a turning-joint ; and after several other indexions, it at length divides into two brandies, one going...
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The Penny Mechanic and Chemist: A Magazine of the Arts and Sciences, Volume 6

1841
...the observer being placed in a seat, suspended at the end of it, with his back towards the object he views. There is no small speculum, but the magnifiers...the opening of the telescope, near the place of the eye glass, a speaking-pipe runs down to the bottom of the tube, where it goes into a turningjoint ;...
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A Popular Grammar of the Elements of Astronomy

Thomas Squire - Astronomy - 1836 - 287 pages
...voice into this pipe, whilst his eye is at the glass. This pipe is one inch and a half in diameter, runs down to the bottom of the tube, where it goes into a turning joint, thence into a drawing tube, and out of this into another turning joint, from whence it proceeds, by...
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The Practical Astronomer

Thomas Dick - Astronomical instruments - 1845 - 567 pages
...direct his voice into this pipe, while his eye is at the glass. This pipe, which is H inch in diameter runs down to the bottom of the tube, where it goes into a turning joint, thence into a drawing tube, and out of this into another turning joint, from whence it proceeds, by...
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The Complete Works of Thomas Dick, Volume 3

Thomas Dick - 1850
...into this pipe, while his eye is at the glass. This pipe, which is li inch in diameter, runs down К the bottom of the tube, where it goes into a turning joint, thence into a drawing tube, and out of this into another turning joint, from whence it proceeds, by...
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