The Compass, Vol. 3: A Monthly Journal for Engineers, Surveyors, Architects, Draughtsmen, and Students, 1893-1894 (Classic Reprint) - Softcover
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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.
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The Compass, Vol. 3 (Classic Reprint)
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Paperback. Zustand: 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. Bestandsnummer des Verkäufers 9781332007325_0
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The Compass, Vol 3 A Monthly Journal for Engineers, Surveyors, Architects, Draughtsmen, and Students, 18931894 Classic Reprint
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9781332007325
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The Compass, Vol 3 A Monthly Journal for Engineers, Surveyors, Architects, Draughtsmen, and Students, 18931894 Classic Reprint
Anbieter: PBShop.store UK, Fairford, GLOS, Vereinigtes Königreich
Verkäuferbewertung 5 von 5 Sternen
PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9781332007325
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