37 Installation services and repair of scientific instruments, research apparatus, research instruments, navigation apparatus, navigational instruments, surveying apparatus, surveying instruments, photographic apparatus, photographic instruments, cinematographic apparatus, cinematographic instruments, audiovisual apparatus, audiovisual instruments, optical apparatus, optical instruments, weighing apparatus, weighing instruments, measurement apparatus, measuring instruments, signalling apparatus, signalling instruments, detection apparatus, detection instruments, testing apparatus, testing instruments, checking apparatus, control instruments, life-saving apparatus, life-saving instruments, teaching apparatus, teaching instruments, and parts and fittings for all the aforesaid goods; installation services and repair of indicators, television receivers, cinematographic apparatus, video apparatus, information technology and audio-visual, multimedia and photographic devices, optical equipment and apparatus, enhancers, correctors, and parts and fittings for all the aforesaid goods; installation services and repair of cameras, cinematographic cameras, cine projectors, film projectors, film production apparatus, film developing apparatus, film recording apparatus, cinematographic machines and apparatus, camera hoods, filters for use in photography, film lenses, photographic lenses, and parts and fittings for all the aforesaid goods; installation services and repair of materials of metal for building and construction, machinery, machine tools and power operated tools, engines and propulsion mechanisms, hand-operated tools and apparatus, surgical instruments, surgical apparatus, medical instruments, medical apparatus, dental instruments, dental apparatus, veterinary instruments, veterinary apparatus, artificial limbs, orthopedic articles, and parts and fittings for all the aforesaid goods; installation services and repair of equipment for lightning, heating, refrigerating, steam generating, cooking, drying, ventilating, water supplying, sanitary purposes, vehicles, apparatus for locomotion by land, air or water, and parts and fittings for all the aforesaid goods; advisory, information and consultancy services relating to the aforesaid