MRI

Meterological and Air-Quality Instruments-Namely, Meterological Instruments and Housings for Weather Stations, Data Recorders and Reproducers, Signal-Conditioning Circuits, Instrument Housings and Mountings, and Instruments for Measuring and Monitoring Temperature, Pressure, Humidity, Dew Point, Precipitation, Snow, Lightning Events and Atmospheric Potential Gradient, Wind Speed and Direction, Solar Radiation, Visual Range, Fog and Other Vision-Obscuring Conditions, Atmospheric Particulates, and Atmospheric Turbulence