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" The screw is practically perfect and has been tested to ] o fa 0 0 inch without showing error. Neither does it have any appreciable periodic error, and the periodic error due to the mounting and graduated head can be entirely eliminated by a suitable... "
Circulars - Seite 241
1882
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The Johns Hopkins university circulars [afterw.] circular

1882 - 272 Seiten
...forward in an equally straight line. The screw is practically perfect and has been tested to -nreVirs inch without showing error. Neither does it have any...one, dividing the 1,474 line with ease, but some are better than others. Kutherfurd's machine only made one in every four good, and only one in a long time...
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Nature, Band 26

Sir Norman Lockyer - 1882 - 960 Seiten
...an equally straight line. The screw is practically perfect, and has been tested to j-ioo,oooth of an inch, without showing error. Neither does it have...grating made by the machine is a good one, dividing the 1474 line with cose, but some are better than others. Rutherfurd's machine only made one in every four...
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Nature, Band 26

Sir Norman Lockyer - 1882 - 722 Seiten
...an equally straight line. The screw is practically perfect, and has been tested to l-ico,oooth of an inch, without showing error. Neither does it have...grating made by the machine is a good one, dividing the 1474 line with ease, but some are better than others. Kutherfurd's machine only made one in every four...
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The Observatory, Band 5

1882 - 426 Seiten
...in an equally straight line. The screw is practically perfect and has been tested to yoi/Dinr inc^ without showing error. Neither does it have any appreciable...grating made by the machine is a good one, dividing the 1474 line with ease, but some are better than others. Eutherfurd's machine only made one in every four...
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Astronomy and Astrophysics, Bände 1-3;Bände 1883-1884

1883 - 966 Seiten
...forward in an equally straight line. The screw is practically perfect, and has been tested to 1-100000 inch without showing error. Neither does it have any...one, dividing the 1,474 line with ease, but some are better than others. Rutherfurd's machine only made one in every four good, and only one in a long time...
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The Physical Papers of Henry Augustus Rowland ...: Johns Hopkins University ...

Henry Augustus Rowland - 1902 - 762 Seiten
...forward in an equally straight line. The screw is practically perfect and has been tested to ] o fa 0 0 inch without showing error. Neither does it have any...grating made by the machine is a good one, dividing the 1474 line with ease, but some are better than others. Kutherfurd's machine only made one in every four...
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The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science

1882 - 610 Seiten
...an equally straight line. The screw is practically perfect, and has been tested to i-ffihsais UK'^ without showing error. Neither does it have any appreciable...grating made by the machine is a good one, dividing the 1474 line with ease; but some are better than others. Rutherford's machine only made one in even' four...
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The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science

1882 - 594 Seiten
...forward in an equally straight line. The screw is practically perfect, and has been tested to 175^5^ inch without showing error. Neither does it have any...grating made by the machine is a good one, dividing the 1474 line with ease; but some are better than others. Kutherfurd's machine only made one in every tour...
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Nature, Band 26

Sir Norman Lockyer - 1882 - 720 Seiten
...equally straight line. The screw is practically perfect, and has been tested to 1-100,0001 h of an inch, without showing error. Neither does it have...grating made by the machine is a good one, dividing the 1474)1116 with ease, but some are better than others. Rutherfurd's machine only made one in every four...
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