"Engineering Drawing" What is this?

Engineering drawing is a study that requires special equipment or tools, to form  the images. Whether the tools be a simple pencil and sketch books, or a computer-controlled plotting device.

Engineering Drawing is an universal graphic language of engineers.It is used by them to develop and record their ideas and transmit them to others for execution. It can  express the complete information about an object (say a machine part), with exactness and details, as no written language can describe even in many pages.

Like the rules of any written language, drawing has its own rules; it has its grammar in the theory of projection, its idioms in conventionalised practice, and its abbreviations in symbols.

In this modern era everything is depends on computer.I will write how we can draw a engineering drawing with the help of software in next post.