Engineering Drawing, 2nd Edition

18

Oblique Parallel Projections and Perspective Projections

OBJECTIVES

After reading this chapter, you will be able to

• Draw oblique parallel projections of simple uncut machine parts
• Draw perspective projections of simple uncut machine parts

18.1 INTRODUCTION

In Chapter 17, we discussed isometric projections. In this chapter, we will discuss oblique and perspective projections. An oblique parallel projection is a pictorial projection with the same pictorial value as that of an isometric projection. It is comparatively easier and faster to draw if the characteristic shapes are projected with the true shape (TS) in any one particular view, preferably the FV, in the orthographic projections. Under certain circumstances, the shapes appear ...