Mechanical engineering technicians typically do the following:

• Evaluate design drawings for new or changed tools by measuring dimensions on the drawings and comparing them with the original specifications
• Prepare layouts and drawings of parts to be made and of the process for putting the parts together, often using three-dimensional design software
• Discuss changes with coworkers - for example, in the design of a part and in the way it will be made and assembled
• Review instructions and blueprints for projects in order to ensure that test specifications and procedures are followed and objectives are met
• Plan, produce, and assemble new or changed mechanical parts for products, such as industrial machinery or equipment
• Set up and conduct tests of complete units and parts and record results
• Compare test results with design specifications and with test objectives and make recommendations for changes in products or in test methods
• Estimate labor costs, equipment life, and plant space

Some mechanical engineering technicians test and inspect machines and equipment, or work with engineers to eliminate production problems. They may assist in testing products by, for example, setting up instrumentation for vehicle crash tests.