The contents of this book represent a short communication and series of lectures given in the engineering level class on Introduction to Mechanical Engineering. We have great pleasure in presenting the First edition of this book. " INTRODUCTION TO MECHANICAL ENGINEERING " is a core subject for BTech, BE and Diploma Students for interring the technology. This book is primarily intended to serve as a textbook in according with syllabus of Mechanical Engineering offered by various universities in India as well as abroad. The authors have identified the problems of the student "level" in this book, a significant effort has been made to find simple ways to develop theoretical as well as review on pictorials representations.