Read this article to learn about symbols, line types, tolerances, and dimensioning standards while mastering the principles of engineering drawings . Improve your drafting techniques to ensure your designs meet industry and CNC machining standards. Engineering drawings are the industry's means of communicating detailed and accurate information on how to fabricate, assemble, troubleshoot, repair, and operate a piece of equipment or a system. Introduction to Engineering Drawing Drawing is the graphical means of expression of ideas, thoughts and feelings without the barrier of a language. Engineering Drawing is the Universal Language for Engineers. Communication in engineering is necessary for effectively transferring one’s ideas to others. While communicating, we use our memory to remember objects, sense organs to perceive objects and mind to imagine objects. Our perception are coloured or modified by our past experiences. Find the right instructor for you. Choose from many topics, skill levels, and languages. Join millions of learners from around the world already learning on Udemy.