After reading this chapter, you will be able to
- Draw straight lines, curved lines, arcs, circles, polygons, ellipses and elliptical arcs without using drawing instruments
- Prepare accurate drawings of machine parts and enlarge, reduce, copy and rotate them
- Change the type, thicknesses, and color of symbolic lines, and erase any selected line
- Dimension drawings to describe the size of the object perfectly
The preparation of engineering drawings with the help of a drawing board, a minidrafter, set squares, dividers, compasses and other instruments is a laborious process. Computer-aided drafting (CAD) helps in preparing drawings without the use of the usual drawing instruments. The ...