42 Engineering, research, development, testing, analysis, evaluation and custom design for others of metal and plastic machine tools, instruments and components, spaceflight hardware, pharmaceutical, medical, chemical, and biological processing equipment, and computer software and hardware for biological, pharmaceutical, medical, electrical, and chemical systems for earth and space applications, including drafting specifications for manufacture; consulting services in the field of mechanical, electrical, software, biomedical, chemical, industrial, and aerospace engineering; development of computer software