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Engineering Drawing, 2nd Edition by B. C. Rana, M. B. Shah

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12

Multiview Orthographic Projections

OBJECTIVES

After reading this chapter, you will be able to

  • Draw the orthographic projections of objects created by the addition and subtraction of elementary shapes or block-type objects bounded by plane surfaces

  • Read the shapes of objects in pictorial views, particularly in the form of isometric projections or oblique parallel projections

12.1 INTRODUCTION

Before constructing a new machine, the designer has to imagine the shapes of the various parts of the machine and their positions relative to each other. The designer has to then convey the complete description of the shape and size of each part to the manufacturing division for fabrication. This description is conveyed through the orthographic ...

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