Analog multimeters; anemometers; circuit boards; circuit boards provided with integrated circuits; component feature of an oscilloscope, namely, an electrical signal acquisition mode; computer hardware and computer software programs for the integration of text, audio, graphics, still images and moving pictures into an interactive delivery for multimedia applications; computer whiteboards; DC/AC power converters; digital multimeters; digital signal processors; distance measuring apparatus; electric power converters; electromagnetic apparatus used to generate or measure magnetic fields; electronic circuit board; electronic instruments, namely, logic analyzers; electronic power supplies for driving electric motors; electronic products for the generation, measurement, and analysis of audio signals, namely, audio analyzers; flow meters; frequency meters; laboratory equipment and supplies, namely, calipers; laboratory equipment and supplies, namely, test tubes; laboratory equipment and supplies, namely, thermometers; oscillographs; oscilloscopes; panel meters, namely, an electronic instrument that displays an input signal in either a digital or analog form; ph meters; power adapters; power supplies; printed circuit boards (PCBs); sound level meters; test pins for testing printed circuit boards; testing apparatus for testing printed circuit boards