Orthographic and Isometrical Projection: Development of Surfaces and Penetration of Solids is a book written by Ellis A. Davidson in 1868. The book is a comprehensive guide to the principles of orthographic and isometric projection, which are two methods of representing three-dimensional objects on a two-dimensional surface. The book provides detailed explanations of these techniques and includes numerous diagrams and illustrations to help readers understand the concepts. The first part of the book covers orthographic projection, which involves projecting the object onto a plane from different viewpoints. The author explains how to create orthographic drawings of objects and how to use them to determine the dimensions of the object. The second part of the book covers isometric projection, which involves projecting the object onto a plane at a specific angle. The author explains how to create isometric drawings of objects and how to use them to determine the shape and size of the object.The book also includes a section on the development of surfaces, which involves unfolding a three-dimensional object into a two-dimensional surface. The author explains how to create surface developments and how to use them to determine the shape and size of the object. The final section of the book covers the penetration of solids, which involves cutting a solid object to reveal its internal structure. The author explains how to create penetration drawings and how to use them to determine the internal structure of the object.Overall, Orthographic and Isometrical Projection: Development of Surfaces and Penetration of Solids is a valuable resource for anyone interested in the principles of orthographic and isometric projection, as well as the development of surfaces and penetration of solids. The book is well-written and provides clear explanations of the concepts, making it accessible to both beginners and experts in the field.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.