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An Introduction to Technical Drawing

Learn the basics of technical drawing in all engineering fields and the apparatus used in this free online course.

Publisher: NPTEL
In this course, An Introduction to Technical Drawing, you will learn the basics to all technical drawing for all engineering professions. You will discover the instruments and accessories used in technical drawing as well as the fundamentals of dimensions and the uniform standard for all technical drawing. This course is for anyone interested in expanding their basic understanding and knowledge of technical drawing in all engineering fields.
An Introduction to Technical Drawing
  • Duration

    1.5-3 Hours
  • Students

  • Accreditation






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This course, An Introduction to Technical Drawing, is a basic development course to teach the fundamentals of technical drawing used in all forms of engineering; from electrical, industrial, mechanical, and civil engineering as professions. This course is not long, but rather a short briefing on the basics of drawing, the instruments involved and the uses of dimensions within technical drawing. It covers special issues and features as well as different tolerance levels with regard to using dimensions for the construction of designs and products. At first, the course begins by explaining the various types of engineering fields and their distinctions. It quickly moves onto what technical drawing is and the methods used to represent ideas and designs in technical drawing. You will learn to distinguish between artistic expression and engineering drawing and discover how large a role engineering drawing plays in manufacturing and industry. Although not necessary to complete the course, you will discuss the equipment needed to successfully proceed in this career or wanting to practice technical drawing now, or in future.

After discussing the different instruments, apparatus and accessories needed for optimal drawing, you will break down each of their uses and characteristics. This will include learning about the variables of drawing sheets such as their designations and dimensions. You will then compare different drawing boards as well as drafters and T-squares. Set squares, protractors, compasses, dividers, and French curves are all fundamental tools used in the drawing process as well as different grades of pencil and lead sticks. Defining the standard letter style and heights; is a basic skill that is uniformly used within all engineering professions. The reasoning for this is that the size of the text divulges what the text is; for example, size 3 (mm) corresponds to legends and schedules. After this meticulous breakdown of the basics, you will be taught the standards of technical drawing specified by different organisations with the same purpose. You will begin by recognizing the standard of the drawing sheet layout, which includes its borders, margins, reference grid system and revision tables. Finally, you will look at dimensions and all that it involves.

Dimensions, as the largest topic of the course, will be discussed at length. Dimensions, having a wide range of variation, is a larger area than one assumes. Within technical drawing, you need to distinguish between the units of dimensions and how to use dimensions with angles. The basics of dimensions need to be defined, as well as multiple special issues with regards to dimensions. You will compare the features of dimensions and have an understanding of what is called tolerances. This is an interesting section based on the margin of error. This is a very important aspect for manufacturers, designers and engineers, to know. This course is a great basic course for anyone looking into engineering as a profession and would like to learn the very foundations of technical drawing, which is a fundamental section of engineering. It is a great introductory guide to all forms of engineering and allows insight into this vocation. So why wait? Start this free online course today and expand your knowledge on all forms of engineering in the technical drawing field.

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