9
[ Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking, life-saving and teaching apparatus and instruments, namely, directional compasses, altimeters, aerometers, ammeters, barometers, chronographs, clinometers, odometers, speedometers; Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electrical transformers, conductors and controllers; Apparatus for recording, transmission or reproduction of sound or images; Computers; fire-extinguishers ]
12
Vehicles and apparatus for locomotion by air, namely, airplanes
13
[ Firearms; ammunition and projectiles; explosives; fireworks ]
37
Building construction, namely, vehicle repair and maintenance; installation of aircraft systems, namely, installation of power plant system, secondary power system, fuel system, electrical power system, hydraulic system, flight control system, landing gear system, environmental control system, oxygen system, crew escape system, fire protection system, interior lighting and exterior lighting, avionic system including communication, indication and recording, cockpit and display, navigation and mission computer functions and armament system