Data processing apparatus; Integrated circuits; Measuring instrumentation and apparatus, namely, digitizers; Metal hardness testing machines; Metal strength testing machines; Navigation apparatus for vehicles in the nature of on-board computers; Navigational apparatus for automobiles; Rheostats; Semi-conductors; Semiconductor testing apparatus; Car navigation computers; Computer component testing and calibrating equipment; Electric navigational instruments; Electro-optical instruments for use in inspection and measurement of industrial components; Electronic instruments for use in remote inspection and measurement of industrial components using remote visual devices; Electronic and optical communications instruments and components, namely, optical data links; Electronic and optical communications instruments and components, namely, optical receivers; Electronic and optical communications instruments and components, namely, optical transceivers; Electronic and optical communications instruments and components, namely, optical transmitters; Electronic and optical communications instruments and components, namely, digital transmitters; Electronic and optical communications instruments and components, namely, communication link testers for testing communication links; Electronic apparatus for testing compression, strength, hardness and tensile characteristics of industrial materials; Electronic apparatus for the remote control of industrial operations; Electronic apparatus, namely, electronic display boards, plasma display boards, electronic display screens; Electronic test and measurement devices for use in the fields of networks and telecommunications, namely, instrumentation used to test and certify new and existing data and voice communication cable and coaxial cable; GPS navigation device; Industrial calibration sensors; Resistance measuring instruments; Telecommunications and data networking hardware, namely, devices for transporting and aggregating voice, data, and video communications across multiple network infrastructures and communications protocols; Tool measuring instruments