Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking, supervision, life-saving and teaching apparatus and instruments, namely, sensor chips for scientific use, underwater camera housings, surveying instruments, photographic cameras, cinematographic cameras, optical lenses, weighing machines, measuring tapes, signaling buoys, apparatus for checking flight parameters, life saving rafts, medical teaching mannequins; apparatus and instr...