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Excerpt from Fergusson's Percentage Unit of Angular Measurement, With Logarithms: Also a Description of His Percentage Theodolite and Percentage Compass; For the Use of Surveyors, Navigating Officers, Civil and Military Engineers, Universities and Colleges Paragraphs numbered 32, 33, 34, and 35, with the 2, 3, 4, 5, and '6, prove the above claims are justified. These Logarithms have involved millions of calculations, and are specially tabulated for practical utility; they easily extend the range of ordinary Logarithm Tables, and without any sacrifice of accuracy their use will shorten field operations enormously. The method of using these Logarithm Tables is explained by the aid of numerous examples. In conclusion, the author wishes to state that, the completion of this work is due more to the self-sacrifice and devotion of his wife, than to his own labour; and in acknowledgment of this fact he makes her a gift of the copyright of this book. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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