Scientific Apparatus and Instruments-Namely, Command Entry Units, Indicators and Displays for Use in the Transmission of Commands and Responses on Nautical Vessels; Electrical Apparatus and Instruments-Namely, Sound, Data and Video Transmitters, Amplifiers, Repeaters and Receivers; Telecommunication Equipment-Namely, Telecommunication Cables, Telecommunication Line Terminating Units, Telephones and Parts Therefor, Television Receivers and Cameras, Microphones, Earphones, Teleprocessing Monitors, Telecopiers, Coder-Decoders, Line Concentrators, Multiplexers, Demultiplexers, Central Office and Private Exchange Switching Units, Modulators, Demodulators, Signal Adaptors and Converters, Teleguiding Transmitters and Receivers, Telemetering Transmitters and Receivers, Servo-Control Units, Transmitters, Transceivers, Amplifiers, Repeaters and Receivers for Telegraphy by Wire or Radio, Testers for Telephone, Telegraph, Data and Video Communication Lines and Circuits; Photographic, Cinematographical and Optical Apparatus and Instruments-Namely, Cameras, Projectors, Lenses; Apparatus and Instruments for Measuring-Namely, Voltmeters, Current Meters, Multimeters, Frequency Meters, Spectrum Analyzers, Intermodullation Meters, Field Strength Meters, Flux Meters; Signaling and Supervisory Apparatus and Instruments-Namely, Dials and Tone Pulse Transmitters, Dial Pulse and Tone Pulse Detectors, Ringers, Signal Converters and Translators, Call Counters, Call Charge Accumulators and Registers and Service-Condition Announcers; Recording and Playback Apparatus-Namely, Voice, Data and Video Recorders and Reproducers, Coin-Operated Telephones; Cash Registers and Calculating Machines-Namely, Point of Sale Registers for Cash Receipts and Goods Sold, Computers, Computer Terminals and Hand and Desk Calculators; and Fire Extinguishers