Scientific, nautical, surveying, photographic, cinematographic, optical, signaling, checking (supervision) and life-saving apparatus and instruments, namely, scuba diving masks, scuba snorkels, scuba goggles, buoyancy compensator devices; teaching apparatus and instruments, namely, electronic sports training simulators; Calculating machines; Data processing equipment; Computers; fire-extinguishing apparatus; Sensors and devices for measuring pressure; Compasses for measuring; Pressure measuri...