9 Scientific, optical, weighing, measuring and checking and supervision apparatus and instruments, namely, apparatus and instruments for checking the correct functioning of aircraft engines and their component parts, namely, apparatus for the visual inspection of parts, namely, scanners, chemical fumes detectors, radiographic apparatus for industrial use for analyzing materials and metals, namely, scanners, variable angle image detectors, graphic keyboards, laser detectors, cameras and ray detectors; electrical and electronic apparatus and instruments, namely, potential calculators, calculators for digital regulation of speed and fuel flow and full authority digital engine controls (FADEC), braking, temperature, pressure, vibration analysis and flight control calculators; electrical, electronic and magnetic sensors for pressure, speed, displacement, temperature, position, vibration; electronic cards for processing parameters; electronic systems and equipment, whether on board or not, for acquiring and processing data, namely, sensors, regulators, converters, transformers, calculators in the aeronautics and space fields; calculation and operating software for simulation, running and storage of test programs; monitoring systems comprised of computer hardware and software for evaluation of security and performance as well as of maintenance and servicing requirements for aircraft engines and/or their modules and parts; electrical and electronic devices and equipment for maintenance and monitoring, whether on board aircraft or engines, fixed on test benches or portable for ground interventions, for reading and interpreting data from computers and sensors, namely, data processing equipment; data processing equipment and computers; software, particularly computer programs and software for providing information on aircraft engines, operation, maintenance, servicing and repair in relation to aircraft engines and/or their modules and parts; software for operation management and repair, overhaul, servicing, maintenance and reconditioning operations conducted on an aircraft engine and/or on its modules and parts; electronic data banks recorded on server, USB stick and hard disk, containing, in particular, information concerning aircraft engines, their operation, the repair, overhaul, servicing, maintenance and reconditioning of engines, modules and parts of aircraft engines; test benches, namely, platforms for measuring performance of motors, engines, turbines and other thrusters being machines for aircraft; all these goods used and/or intended for the aeronautical and space field