""An Elementary Treatise On Orthographic Projection"" is a book written by William Binns and published in 1857. This book presents a new method for teaching the science of mechanical and engineering drawing through the use of orthographic projection. Orthographic projection is a technique used to represent a three-dimensional object in two dimensions, making it easier to draw and understand. The book is intended for beginners and provides a comprehensive guide to the principles and techniques of orthographic projection. It covers topics such as the projection of points, lines, and planes, as well as the projection of solids and sections. The book is illustrated with numerous diagrams and examples to help readers understand the concepts presented. It is a valuable resource for students and professionals in the fields of mechanical and engineering drawing, as well as anyone interested in learning about orthographic projection.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.