42 Calibration services for control of quality of assembly tools and measurement equipment in production lines; development, testing, and analysis of controllers and control units for controlling of tightening functions and processes in production lines; development, testing, and analysis of controllers, control units, control apparatus, and control devices for surveillance, configuration, and control of assembly and quality assurance processes in production lines; development, testing, and analysis of control systems for surveillance, configuration, and control of assembly and quality assurance processes in production lines; development, testing, and analysis of calibration apparatus and units for control and quality assurance of assembly tools and measuring equipment in production lines; development, testing, and analysis of control systems for controlling of tightening functions and processes for nut drivers and nut drivers in production lines; development, testing, and analysis of electronic controllers and control systems for surveillance of processes in production lines, namely, processes for configuration, control, assembly, tightening, and quality assurance