Whenever you buy or use almost any product, you can be sure that a mechanical engineer was involved in making it.
Mechanical engineering is one of the broadest engineering fields. That’s because a mechanical engineer’s work varies by industry and by the type of work. For example:
A mechanical engineer working at a tool company may design
and build the automated machines used to assemble
products. These automated machines are the tools that other
engineers need for their work. Such machines might be used
to build products such as automobiles, computers, lamps,
cell phones and stereos. A machine tool engineer is
an example of this type of mechanical engineer. Because mechanical engineers work with machines, they may specialize in:

Mechanical engineers use computers daily to:
By using CAD/CAM – Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM) – mechanical engineers can turn a design into a manufactured product.
If you major in mechanical engineering in college, you will study:
You also must be able to understand and apply concepts from chemistry and electrical engineering.
