Precise Levelling; Certain Lines in Ontario and Quebec: With Index Map Showing All Work Previously Published (Classic Reprint) - Couverture souple

Name: Precise Levelling; Certain Lines in Ontario and Quebec: With Index Map Showing All Work Previously Published (Classic Reprint)
Author: Reid, F. B.
ISBN: 9781528010610

Reid, F. B.

9781528010610: Precise Levelling; Certain Lines in Ontario and Quebec: With Index Map Showing All Work Previously Published (Classic Reprint)

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ISBN 10 : 1528010612 ISBN 13 : 9781528010610

Editeur : Forgotten Books, 2018

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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. This text has been digitally restored from a historical edition. Some errors may persist, however we consider it worth publishing due to the work's historical value.The digital edition of all books may be viewed on our website before purchase.

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�diteur: Forgotten Books
Date d'�dition: 2018
Langue: anglais
ISBN 10: 1528010612
ISBN 13: 9781528010610
Reliure: Broch�
Nombre de pages: 52
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Precise Levelling; Certain Lines in Ontario and Quebec (Classic Reprint)

F. B. Reid

Edit� par Forgotten Books, 2018

ISBN 10 : 1528010612 ISBN 13 : 9781528010610

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Vendeur : Forgotten Books, London, Royaume-Uni

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Paperback. Etat : New. Print on Demand. This book presents the results of precise levelling by the Geodetic Survey of Canada for certain lines in the provinces of Ontario and Quebec, with index and map showing all work previously published. The results of the levelling are given in three tables. The first indicates the routes followed between terminal points and gives complete descriptions of all bench marks established along these routes. The second and third show the elevations determined for these bench marks and for certain bench marks established by other surveys and connected with the former. The closing errors of lines 4, 5, and 7 have been disposed of by distributing them as corrections along line 1. The policy of disposing the closing errors and adjusting the new levelling to the old has been adopted for this work because, although the lines form loops around the western portions of the city of Toronto, there are discrepancies at the different junction points, and until an adjustment is made of the entire level net-work of the country it seems better, pending an adjustment, to eliminate the closing errors and avoid discordant elevations at the junction bench marks. The bench marks are described in full so as to facilitate their recovery should they be disturbed or destroyed. This book will be useful to engineers and surveyors and to any interested in the levelling of this region. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. N� de r�f. du vendeur 9781528010610_0

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