9 Scientific, nautical, surveying, photographic, cinematographic, optical, measuring, signaling, checking, life-saving and teaching apparatus and instruments, namely, navigational compasses, cameras, video cameras, and microscopes; weighing apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electrical switches, voltage regulators, and capacitors; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, namely, blank magnetic data carriers, prerecorded magnetic data carriers featuring mathematics and health information, recording discs, namely, blank video discs, prerecorded digital video discs featuring mathematics and health information; compact discs, namely, blank CDs, prerecorded CDs featuring mathematics and health information, DVDs, namely, blank DVDs, and prerecorded DVDs featuring mathematics and health information, and other digital recording media, namely, blank magnetic data carrier, prerecorded magnetic data carriers featuring mathematics and health information; mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment, computers; computer software for use in database management, use as a spreadsheet, and word processing; fire-extinguishing apparatus; Instructional and teaching materials, namely, medical teaching mannequins