Ammeters; Batteries; Computer peripheral devices; Computers; Data processing apparatus; Instruments for measuring length; Measuring apparatus, namely, clamp meters for measuring electricity; Measuring devices, namely, fluorometers; Measuring and control devices for air conditioning technology; Monitoring devices for monitoring battery performance characteristics; Network servers; Optical apparatus and instruments, namely, optical ports for underwater photography, dome ports for underwater photography, wet diopters, adapter lenses for underwater photography; Surveying instruments; Surveying machines and instruments; Voltmeters; Weighing machines; X-ray apparatus not for medical purposes; Alarm monitoring systems; Analog multimeters; Apparatus for measuring the speed of golf swing; Digital multimeters; Electro-optical instruments for use in inspection and measurement of industrial components; Electronic measuring device that displays a manual wheelchair user's propulsion activity, namely, number of pushes, distance traveled, speed, and cadence; Electronic monitors for monitoring flowmeters; 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, cable television transmitters; Electronic and optical communications instruments and components, namely, communication link testers for testing communication links; Electronic and optical communications instruments and components, namely, digital transmitters; Electronic device for monitoring and optimizing photovoltaic arrays; Industrial X-ray apparatus in the nature of testing equipment for determining industrial flaws; Insulation resistance meters; Radiation-measuring instruments; Tool measuring instruments; Water testing instrumentation for monitoring and detecting contamination; Wire diameter measuring devices