Mechanical Engineering is one of the broadest genres in the engineering industry. Specific job duties vary, depending on the kind of company and assigned project. In general, Mechanical Engineers spend their time researching, designing, developing, building, testing, and inspecting mechanical devices. These devices may include engines, tools, thermal sensors, and large machinery apparatus. On a daily basis, a Mechanical Engineer may spend time analyzing mechanical and thermal devices, troubleshooting problems, determining solutions, and completing repairs. They also develop and test technical and mechanical prototypes of new designs and devices. A Mechanical Engineer can also work on devices such as escalators, elevators, conveyor systems, and automated transfer stations.