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" The following table gives the differences thus found at iJO points along the line between Portishead and Axmouth, the height, in every instance, coming out greater from the series of levels returning towards Portishead. No. of Station Miles from Height... "
Tables of Heights in Sind, the Punjab, N.W. Provinces and Central India ... - Page 14
de India. Great Trigonometrical Survey - 1863 - 196 pages
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Report of the Annual Meeting

British Association for the Advancement of Science - 1839
...distant point having the greatest error. The following table gives the differences thus found at iJO points along the line between Portishead and Axmouth,...levels returning towards Portishead. No. of Station Miles from Height greater by in Minute-book. Portishead. 2nd than 1st Levels. Feet. 1683 .... 0 .......
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Crocker's Elements of land surveying. To which are added, Tables of six ...

Abraham Crocker - 1841
...error. The following are the differences which were thus found at twenty points, nearly equidistant, along the line between Portishead and Axmouth, the height, in every instance, coming out greater in the series of levels returning towards Portishead. [See the Table at top of next page.] After a...
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