Mechanical Engineers help mechanical engineers design, develop, test, and manufacture mechanical devices, including tools, engines, and machines. They may make sketches and rough layouts, record and analyze data, make calculations and estimates, and report their findings. Mechanical Engineering Technicians may need to test and inspect machines and equipment or work with engineers to eliminate production problems and find a proper solution within a short-time. They analyze test results in relation to design or rated specifications and test objectives, and modify or adjust equipment to meet specifications and evaluate tool drawing designs by measuring drawing dimensions and comparing with original specifications for form and function, using engineering skills.