Aanderaa Instruments
   Instruments and Sensors for Land, Sea and Air
   http://www.aanderaa.com/

Adcon Telemetry GmbH
   Provide meteorological sensors, but specialty is wireless telemetry.
   http://www.adcon.at/english/produkte_sensoren_en.html

Advanced Designs Corp.
   Doppler Weather Radar and Weather Data Displays, Doppler Radar, Weather Radar.
   http://www.doprad.com/

Advanced Sensing Products
   ASP is a manufacturer standard PRTs, precision RTDs, and different types of thermocouples.
   http://www.aspsensors.com

AllWeatherInc
   Weather sensors, environmental monitoring systems, data collection products, display and recording devices.
   http://www.allweatherinc.com/

Alltec Corp.
   A manufacturer of lightning protection and grounding systems.
   http://www.allteccorp.com/index.html

Applied Technologies, Inc.
   Scientific instrumentation, software, and systems for meteorological and atmospheric research.
   http://www.apptech.com/

Atmospheric Radar Systems (ATRAD)
   Atmospheric Radar systems for scientific and commercial applications.
   http://www.atrad.com.au/

Axinum Innovations & Technologies
   Manufacture of Siphoning Rain Gauges and Data Loggers
   http://www.axinum.com

B. K. Consimpex Meteorological Systems
   Satellite remote sensing & metereological system integrators in India.
   http://www.bkconsimpex.com/home.htm

BOLTEK
   A leader in affordable thunderstorm tracking technology and Lightning Detection Systems.
   http://www.boltek.com/

Belfort Instruments
   Instruments include Wind, Precipitation, Temperature, Humidity, Pressure, and Visibility.
   http://www.belfortinstrument.com/

Biral
   Manufacturer of visibility and present weather sensors along with other wind and precipitation sensors.
   http://www.biral.com

Campbell Scientific Ltd.
   Weather monitoring products, including automated, research-grade weather stations.
   http://www.campbellsci.com

Casella CEL
   Manufacturer and supplier of meteorological equipment, weather stations, rain gauges, solar equipment and wind speed and direction.
   http://www.casellacel.com

Climatronics Corp.
   Meteorological systems for ambient surface and upper air weather stations and networks. Offering sensors for wind, temperature, humidity, rainfall, pressure, solar, ice, clouds and visibility.
   http://www.climatronics.com/

Coastal Environmental Systems
   Coastal Environmental designs and manufactures weather stations, meteorological, environmental monitoring instrumentation, and data acquisition systems.
   http://www.coastalenvironmental.com/cgi/home.php

Columbia Weather Systems
   Makers of the Capricorn weather stations. Systems include wind speed and direction, temperature, barometric pressure, humidity, rainfall, leaf wetness, solar radiation and soil moisture.
   http://www.columbiaweather.com/

Comptus Inc.
   Manufacturer of meterological instruments for measuring wind, rain, snow and other weather elements.
   http://www.comptus.com/

Corr-Tek Idrometria
   Environmental Monitoring: Products for Sampling and Monitoring Water
   http://www.ott-hydrometry.de/web/ott_uk.nsf/id/pa_home_e.html

DWC (Danish Wind Controller A/S)
   Rugged wind sensors for critical environmental conditions.
   http://www.dwc-el.dk/

Davis Instruments Corp.
   Weather instrumentation for amateur and commercial meteorologists. Introductory Flash option.
   http://www.davisnet.com/

Diplex Instruments
   Manufacture, import and distribute meteorological and scientific instruments. Specialist in thermometers.
   http://www.diplexinstruments.co.uk

Dynalab
   Manufacturer of Meteorological sensors and Automatic Weather stations
   http://www.dylab.com

Dynamax, Inc.
   Provides instruments and sensors for plant, water, environment, and hydrology.
   http://www.dynamax.com

ELBW Technology SA,
   Designer and manufacturer of no moving parts Meteorological sensors
   http://www.elbw.ch

ELE International
   Range of meteorological testing and monitoring equipment.
   http://www.ele.com/env/int/env1.htm

Enercorp Instruments Ltd
   A Manufacturer of Pressure, Temperature, and Humidity instrumentation.
   http://www.process-controls.com/enercorp/

EnviroTech Sensors
   Specialize in the design, and manufacture of sensors used in environmental and industrial settings.
   http://www.envirotechsensors.com

Environdata
   Design, manufacture, and sale of weather stations and sensors.
   http://www.environdata.com.au/

FT Technologies Ltd
   Manufacturers of compact, rugged, low power ultrasonic wind sensors.
   http://www.fttech.co.uk/

Fairmount Weather Systems
   Manufacturer of Meteorological & Hydrological Instruments.
   http://www.fairmountweather.com

Fidelity Technologies Corp.
   Line of high-precision meteorological products and systems.
   http://www.fidelitytech.com/commercial.html

Fischer
   Manufactures measuring and recording instruments for meteorology and indoor climate.
   http://www.fischer-barometer.de/english/index.htm

GPSE
   Provides Data Logging and Weather Station solutions to the scientific, agriculture, and construction industries.
   http://homepages.ihug.co.nz/~gpse/

GRAW Radiosondes
   Develops and manufactures GPS-based radiosonde-systems for upper-air measurements
   http://www.graw.de/

Gematronik Weather Radar Systems
   Doppler weather radar systems and weather data processing software.
   http://www.gematronik.com/

High Sierra Electronics
   Meteorological & Hydrological Sensors & Gauges, including warning & response products and services.
   http://highsierraelectronics.com

Hovemere Ltd
   Scientific instrument company specialising in Optical and Electronic Measurement Systems, for use in Research Applications.
   http://www.hovemere.com/

Hukseflux Thermal Sensors
   For measurement of heat flux, thermal conductivity, thermal gradients and transfer coefficients, and particularly surface energy balance measurements in meteorology.
   http://www.hukseflux.com/

IAV Engineering
   Manufacturer of the patented FlowCapt snowdrift monitoring solutions.
   http://www.flowcapt.com

IRDAM SA
   Automatic weather stations, digital anemometers and other meteorological instruments and sensor systems for the naval defence industry.
   http://www.irdam.ch

Info-Electronics Systems Inc.
   Supplies state-of-the-art meteorological equipment and weather briefing/forecasting systems.
   http://www.info-electronics.com

Instromet Ltd
   Weather Monitoring equipment manufacture.
   http://www.instromet.co.uk

Inteltronics Instrumentation
   Supplier of Meteorological Instrumentation in South Africa and Africa.
   http://www.inteltronics.co.za/

Intermountain Environmental
   Carries a wide variety of meteorological system and sensors for environmental work.
   http://www.inmtn.com/

Jarek Manufacturing Limited
   Rain Gauges, tipping bucket type
   http://www.jarekmfg.com/

Kipp & Zonen Corp.
   A manufacture of environmental monitoring instrumentation, ISO and WMO class meteorological and solar radiation sensors and accessories.
   http://www.kippzonen.com/

Koshin Denki Kogyo Co. Ltd.
   International manufacturer of individual sensors and weather systems, based in Japan.
   http://www.koshindenki.com/

LI-COR Environmental Research and Analysis
   Instrumentation for the environmental sciences, including radiation sensors, infrared gas analyzers, dataloggers, light meters, and meteorological measurement systems.
   http://www.licor.com/env/

LN Industries Environmental Instrumentation
   LN Industries Air pollution monitoring network equipment calibrates air pollution monitors of SO2, NO, NO2, CO, CO2, O3, hydrocarbons, BTX, NH3, H2S.
   http://www.lnindustries.com/instrumentation/en/produits/environnement.html

Lambrecht GmbH
   Develops precision meteorological instruments and systems.
   http://www.lambrecht.net

Lirafort
   Atmospherique pressure recorder. Displays the graph of the pressure on a screen
   http://www.lirafort.com/en/

METEK BmbH
   A producer of ground based remote sensing equipment for meteorological applications
   http://www.metek.de/

Mesotech
   Instruments and systems for meteorology, hydrology, and environmental monitoring
   http://www.mesotech.com

Met Engineering Limited
   Procurement and supply of professional quality meteorological instrumentation, equipment and systems, and the provision of wide-ranging engineering support, worldwide.
   http://www.metenguk.com/

MeteoClima
   Automatic weather stations and Data Acquisition Systems.
   http://www.meteoclima.de/english/index.htm

Meteorological Systems and Equipment
   Meteorological Instruments, Manufactures Automatic Weather and Environmental Station, Services, and Maintenance.
   http://www.mse-bg.com

Meteorological measurement technology
   Meteorological sensors and measurement systems: The place to start searching. Comprehensive database.
   http://www.meteo-technology.com/

MicroStep-MIS
   Manufactures monitoring and information systems for a variety of disciplines including meteorology and environmental sciences.
   http://www.microstep-mis.com

Microcomm Group
   Manufacturers of meteorological and environmental monitoring systems for defence, industrial, and marine applications.
   http://www.microcommgroup.com/

Middleon Solar
   Builds solar and terrestrial radiation instruments including a solarimeter, pyrheliometer and net pyrradiometer
   http://www.middletonsolar.com

Mierij Meteo
   Meteorological sensors and systems.
   http://www.mierijmeteo.nl/

Morcom International, Inc.
   Supplies a wide range of meteorological equipment and systems.
   http://www.morcom.com/

Muir Matheson Ltd
   An engineering company specializing in installation and maintenance of weather monitoring equipment
   http://www.muir-matheson.com

NovaLynx Corporation
   Manufacturer of weather monitoring instruments including tipping bucket rain gauges, anemometers, evaporation pans and sensors, and modular weather stations.
   http://www.novalynx.com/

Nubila SAS
   Developer of meteorological software and hardware for data processing and nowcasting, including the rain gauge-disdrometer PLUDIX, based on backscattering of a MW beam by hydrometers. Italian company, site in English.
   http://www.nubila.net/

Optical Scientific, Inc.
   Measurement instruments using optical technology in the areas of weather, the environment, transportation, aviation and communications.
   http://www.opticalscientific.com/

Pacific Data Systems
   Meteorological instrumentation and systems, water quality, air quality, and data acquisition.
   http://www.pacdatasys.com.au

Pulsonic
   Meteorological Instruments - agriculture modelisation software
   http://www.pulsonic.net/PULSONIC_WEB/UK/PAGE_ACCEUIL.htm

R. M. Young Company
   Precision meteorological instruments for: Wind Speed and Direction, Temperature, Humidity, Pressure, Precipitation; Indicators and displays, Data recorders
   http://www.youngusa.com

REMTECH Inc. Home Page
   Manufactures DOPPLER SODAR (Acoustic Wind Profiler), the RASS (Air Temperature Profiler) and the DOPPLER SONAR (Acoustic Doppler Current Profiler)
   http://www.remtechinc.com

Radiometrics Corporation
   Radiometers to provide water vapor and temperature profiles.
   http://www.radiometrics.com

RainWise Inc.
   Manufactures solar powered wireless weather stations, data loggers, rain gauges, anemometers, barometers, and thermometers
   http://www.rainwise.com

Rotronic
   Line of instruments for the measurement of relative humidity, dew point, water activity and other humidity parameters.
   http://www.rotronic-usa.com/

Scientific Sales, Inc.
   Offers a line of weather instruments, including wireless weather stations.
   http://www.scientificsales.com/

Scintec A.G.
   Manufacturer of innovative radiowave, acoustic, and optical sensing technology for atmospheric research.
   http://www.scintec.com/

SensorScope
   A new generation environmental measurement system centered on wireless sensor networks.
   http://sensorscope.epfl.ch/wiki/

Sensormetrics
   Weather Instruments and Environmental Measurement Systems for Commercial and Residential applications.
   http://www.sensormetrics.com/

Sippican, Inc.
   Product lines include expendable upper air oceanographic and meteorologic instrumentation and associated data acquisition systems.
   http://www.sippican.com

Skyview Systems
   Skyview Systems is a UK based company, supplying meteorological, hydrological and marine instruments.
   http://www.skyview.co.uk/

Solar Light Company
   Manufacturer supplying solar radiation, ozone column, and aerosol measurement systems.
   http://www.solarlight.com

Squitter Electronics
   Weather monitoring products, including a full line of automated, research-grade weather stations.
   http://www.squitter.com

Sutron Corporation
   Information and products to build a weather station.
   http://www.sutron.com/

TECMES Instrumentos Especiales SRL
   Produces sensors, recorders and systems for hydrometeorology and agrometeorology.
   http://www.tecmes.com/english/home.htm

Technika Weather Station Central
   Weather Stations in the best olde world tradition with state of the art precision technology.
   http://www.technika.com/ws/wshome.htm

Texas Electronics
   Designer and manufacturer of industrial quality meteorological sensors and systems since 1957, including rain, wind, temperature, barometric pressure, humidity, controllers, data loggers, and solar radiation instruments.
   http://www.texaselectronics.com/

Texas Weather Instruments
   Digital weather stations, peripherals, and related equipment.
   http://www.txwx.com/

Theodor Friedrichs GmbH
   Meteorological Sensors and Systems
   http://www.th-friedrichs.com/TH_Friedrichs/site/engl/index.php

Thies Clima
   Measurement instruments for meteorology, environmental protection, and industrial applications.
   http://www.thiesclima.com/ind1e.htm

Thorn Satcom Data Services
   The supply and configuration of Remote Weather Stations with Meteorological Satellite Telemetry Systems and Data Collection Platforms.
   http://www.thornsds.co.uk/

UPSI Hgrometry
   Humidity & Temperatuare sensors, transmitters, and probes
   http://perso.orange.fr/upsi/

US Precision Lightning Network
   Provides lightning detection services
   http://www.uspln.com/

Vaisala
   Manufactures electronic measurement systems and equipment for meteorology and the environmental sciences, traffic safety, and industrial applications.
   http://www.vaisala.com/

Vector Instruments
   Manufacture and sales of quality, robust, and professional meteorological instruments for scientific, industrial and wind-power applications.
   http://www.windspeed.co.uk/ws

Wittich & Visser
   Manufacturer of meteorological instruments and complete systems.
   http://www.wittich.nl/

Yankee Environmental Systems, Inc.
   Advanced optical weather instrumentation for solar radiation and dew point humidity.
   http://www.yesinc.com/