The 21st century marks the advent of advancement in information technology as well as improvements in physical science, robotics and communication mechanisms all over the world. From the fastest ever automobile to have been created to the smartest phone, we have witnessed it all.
Much can be written about the methods via which these machines have been intricately packaged. Hundreds, if not thousands of small parts are assembled to give us our favourite machines. These include power-producing machines, industrial machines, electrical appliances, household appliances, vehicles; basically every vital big and small machinery we see around us that help us carry out our day to day activities with ease and comfort.