Mechanical product testing and inspection technology mainly studies the basic knowledge and skills of mechanical pattern recognition and drawing, metal technology, sensors and automatic detection. In the field of mechanical product testing and inspection technology, it conducts product performance testing, geometric precision measurement, management and maintenance of measuring instruments, quality management, etc. Common tests include surface roughness inspection, form and position error inspection, material inspection, pattern inspection, casting inspection, forging and stamping inspection, welding inspection, riveting inspection, heat treatment inspection, surface treatment inspection, etc.