Air quality measurement apparatus, namely, particle counters; Astronometric measuring machines and instruments; Clinical laboratory analyzers for measuring, testing and analyzing blood and other bodily fluids; Distance measuring apparatus; Electromagnetic apparatus used to generate or measure magnetic fields; Electronic detectors for observing and measuring the infrared spectrum, namely, infrared detectors; Electronic instruments for use in remote inspection and measurement of industrial components using remote visual devices; Electronic products for the generation, measurement, and analysis of audio signals, namely, audio analyzers; Electronic-based instruments for measuring environmental parameters including humidity, mold, bacteria, air quality and water quality; Electronical sensors for measuring solar radiation; Environmental monitoring system comprised of meters and sensors that measure pressure, humidity, temperature and includes alarm and reporting functions; Instruments for measuring length; Laser doppler for measuring purposes; Laser measuring systems; Lasers for measuring purposes; Length measuring gauges; Measurement standard devices for nanometrology, namely, measuring tools having a pattern in the micrometer or nanometer ranges; Measuring and control devices for air conditioning technology; Measuring apparatus for temperature and humidity levels in gases and solid substances; Measuring apparatus, namely, rain gauges; Measuring instrumentation and apparatus, namely, digitizers; Portable electronic recorder for measuring and recording multiple voltage, current and thermocouple readings from various transducers; Radiation-measuring instruments; Resistance measuring instruments; Rheometers for measuring the viscosity and viscoelasticity of fluids; Scientific apparatus and instruments for measuring relative DNA/RNA and protein and parts and fittings therefor; Scientific apparatus for use with membrane filtration, namely, water filter controllers and computer software for detecting and measuring water quality; Scientific apparatus, namely, spectrophotometer for measuring relative DNA/RNA and protein; Scientific apparatus,namely sensing and signaling devices for measurement and quality control of materials processing by laser; Scientific measuring instruments, namely, conductivity meters; Screw-thread measuring machines and instruments; Temperature sensors used in the medical field to measure temperature of medical solutions; Testing equipment for measuring the temperature, pressure, position or form of workpieces in a machine tool; Tool measuring instruments