9 Scientific instruments, namely, ultra-high vacuum chambers, conductivity meters for determining the water content in petroleum products; nautical apparatus and instruments, namely, underwater housings for cameras, underwater enclosures for cameras and underwater enclosures for photographic lenses; surveying apparatus and instruments; photographic apparatus and instruments, namely, underwater housings for cameras, underwater enclosures for cameras and underwater enclosures for photographic lenses; cinematographic apparatus and instruments; optical apparatus and instruments, namely, optical inspection apparatus, optical ports for underwater photography, dome ports for underwater photography, wet diopters, adapter lenses for underwater photography; weighing apparatus and instruments; measuring apparatus and instruments, namely, bevels, angle finders, clamp meters for measuring electricity, wheel alignment measuring apparatus, namely, rolling roads, resistance measuring instruments, instruments for measuring length; signaling apparatus and instruments, namely, signaling devices for measurement and quality control of materials processing by laser; checking and supervision apparatus and instruments, namely, for checking the temperature, pressure, quantity and concentration of gas and liquids; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electricity conduits, electricity limiters, adapters; apparatus for recording, transmission or reproduction of sound or images; blank magnetic data carriers, blank recording discs; blank compact discs, DVDs and other digital recording media in the nature of digital video discs; cash registers, calculating machines, data processing equipment and computers; computer software for use as a spreadsheet and word processing; fire-extinguishing apparatus including chips in the nature of integrated circuits, encoded magnetic cards, namely, magnetic identifying cards, hardware in the nature of optical magnetic coded card readers and computer memories