Excerpt from The Compass, Vol. 3: A Monthly Journal for Engineers, Surveyors, Architects, Draughtsmen, and Students, 1893-1894
C E, Fig. 5, touch a circle, and from the point of contact A a straight line A B be drawn cutting the circle, the angles CA B and B A E, which this line makes with the line touching the circle, shall be equal to the angles A D B and A F B which are in the alternate segments of the circle. Thus, in the figure, the angle A 0 B at the centre of the curve being known 2 a, the angle in the segment A D B =c A B 180° a. Set the vernier of the instrument to the angle thus found, and taking any position, say D, supposed to be in or near to the required curve, hold up the instrument, the observer facing towards the centre of the curve. If the images of a rod at A and another rod at B coincide in the two prisms vertically, then the point D is in the required curve, but if they do not coincide, the observer must shift his position until they are brought into coincidence. In this manner, and by the simple use of the rods at A and B, any number of points in the curve may be found.
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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.
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Excerpt from The Compass, Vol. 3: A Monthly Journal for Engineers, Surveyors, Architects, Draughtsmen, and Students, 1893-1894
C E, Fig. 5, touch a circle, and from the point of contact A a straight line A B be drawn cutting the circle, the angles CA B and B A E, which this line makes with the line touching the circle, shall be equal to the angles A D B and A F B which are in the alternate segments of the circle. Thus, in the figure, the angle A 0 B at the centre of the curve being known 2 a, the angle in the segment A D B =c A B 180° a. Set the vernier of the instrument to the angle thus found, and taking any position, say D, supposed to be in or near to the required curve, hold up the instrument, the observer facing towards the centre of the curve. If the images of a rod at A and another rod at B coincide in the two prisms vertically, then the point D is in the required curve, but if they do not coincide, the observer must shift his position until they are brought into coincidence. In this manner, and by the simple use of the rods at A and B, any number of points in the curve may be found.
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.
Excerpt from The Compass, Vol. 3: A Monthly Journal for Engineers, Surveyors, Architects, Draughtsmen, and Students, 1893-1894
The Compass: A Monthly Journal for Engineers, Surveyors, Architects, Draughtsmen, and Students, 1893-1894 was written by William Cox in 1894. This is a 170 page book, containing 57436 words and 46 pictures. Search Inside is enabled for this title.
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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Librería: Forgotten Books, London, Reino Unido
Paperback. Condición: New. Print on Demand. This book meticulously examines various surveying instruments and techniques and their implementation for land surveys. It starts by highlighting that the modern surveyor requires instruments that can deliver more accurate and reliable results than the standard magnetic compass. The solution presented is the Solar Transit, an Engineers Transit with a vertical circle combined with a Saegmuller patent Solar Attachment. The author then discusses the fundamental astronomical concepts surveyors need to know to determine true meridians. The book details the construction, advantages and precise methods of using Solar Transits for accurate surveying and provides useful diagrams to illustrate these concepts. 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. Nº de ref. del artículo: 9781332007325_0
Cantidad disponible: Más de 20 disponibles
Librería: PBShop.store US, Wood Dale, IL, Estados Unidos de America
PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000. Nº de ref. del artículo: LW-9781332007325
Cantidad disponible: 15 disponibles
Librería: PBShop.store UK, Fairford, GLOS, Reino Unido
PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000. Nº de ref. del artículo: LW-9781332007325
Cantidad disponible: 15 disponibles