9 Scientific apparatus and instruments, namely, ultra-high vacuum chambers; nautical apparatus and instruments, namely, underwater breathing apparatus, surveying apparatus and instruments; photographic apparatus and instruments, namely, cameras; cinematographic apparatus and instruments, namely, film cameras; optical apparatus and instruments, namely, optical lenses; weighing apparatus and instruments; measuring apparatus and instruments, namely, digitizers; signaling apparatus and instruments, namely, signal processors; checking apparatus and instruments for supervision of temperature, pressure, quantity and concentration of gas and liquids; life-saving apparatus and instruments, namely, rafts; teaching apparatus and instruments, namely, medical teaching mannequins; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic recording media, namely, blank magnetic data carriers; sound recording disks, namely, blank CD-ROMs; mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment, namely, data processors, computers; fire extinguishers