scientific and electrical apparatus and instruments, namely, measuring and control products in the nature of temperature controllers, humidity controllers, pressure controllers, strain controllers, force controllers, tilt controllers, radiation controllers, speed controllers, flow controllers, pH controllers, load controllers, liquid level controllers, vibration controllers, controllers for electrical resistance, air velocity, amperage, frequency, voltage, conductivity, data acquisitions, display and retrieval; computers; computer products, namely, monitors, keyboards, chip assemblies, cable connectors, memory and thermal controllers; computer software used in the field of science and engineering for measurement and display of temperature, pH, humidity, pressure, strain, force, tilt, radiation, speed, flow, level, load, vibration, electrical resistance, air velocity, amperage, frequency, voltage, conductivity and data; micro-processors; programmable devices, namely, hard drives, floppy drives and microchips; electric controllers; computer interface boards; computer printers; temperature, pressure, flow and electrical management controllers for use with computers; blank magnetic tapes and discs; blank floppy discs, computer hard drives; blank magnetic data carriers; computer housing; electrical and electronic instruments and apparatus, namely, testers, meters, processors and displays for measurement, recording, regulation and control of process and electrical parameters in the nature of temperature, humidity, pressure, strain, force, flow, level, pH, load, vibration, electrical resistance, gas velocity, amperage, frequency, voltage, ion concentration, and conductivity; computer software for retrieving and displaying scientific and engineering data; prerecorded educational video tapes featuring engineering and science information; computer software for industrial process control; and computer software for engineering data processing