9 Scientific, photographic, optical measuring, signaling and checking apparatus and instruments, namely, cameras, optical tables, scanners for automatic surface control, optical profilers, electric or electronic sensors for measuring surface properties, sensing and signaling devices in the nature of computer hardware, electronic sensors, optical sensors, and magnetic sensors for measurement and quality control of optical data carriers, electrical leak detection hardware, electrical lights for concentrating optics for use in the generation of optical masters and optical data carriers; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electrical adapters, electrical signal attenuators, electrical transformers, electric sensors, electric accumulators and batteries, electricity limiters, electrical transducers, electric actuators, electrical terminal boxes, electrical circuit boards, electrical controlling devices, electric light switches, electric valve actuators, electrical power supplies, static electricity eliminators, electric and electronic circuits, electronic monitors and monitor modules for monitoring electrical signals; apparatus for recording, transmission and reproduction of electronically stored data and data in the nature of information; blank optical data carriers, namely, recordable CD-Rs, recordable DVDs, recordable HD-DVDs, CD-ROMs, high definition DVDs for sound or video recording, DVD-ROMs for sound or video recording, and recordable high definition DVDs; apparatus and instruments for scientific research, namely, optical mirrors, spectrometers and structural parts and structural fittings therefor, optical beam splitters, optical gratings; apparatus and instruments for data processing, namely, data processing equipment, computers, interfaces and peripheral devices for computers, interfaces for detectors; apparatus and instruments for the production of blank optical data carriers, in particular CDs, DVDs, HD-DVDs, CD-ROMs, DVD-ROMs, and high definition DVDs, namely, electroplating machines; computer hardware and computer software for audio and video premastering and mastering