Optical Scientific, Inc. was founded in 1985. We are a research, development, engineering, and manufacturing firm located in the I-270 high technology corridor outside of Washington, DC. We design and build the most advanced optical instruments in the world for measuring air and gas flow, wind, turbulence, liquid and powder tank levels, visibility, and precipitation amount and type. For over 39 years we have been engaged in a constant research and development program to ensure our position as world leader. Our sensors and systems serve airports, highways, railroads, sea-borne vessels, smelters, power plants, refineries, and hundreds of other commercial and industrial sites around the world. Our products and capabilities include Environmental Instruments (Optical Anemometers & Optical Flow Sensors), Laser Level Meters, Weather Instruments (crosswind, turbulence, rain, snow, visibility & present weather sensors), Modular Automated Weather Observing Systems, low-cost portable weather stations and a wide range of systems engineering, field testing, installation, training and support services, all with excellent customer service. Gaithersburg, Maryland

We are a world leader in high performance marine electronics for the recreational boating and light commercial marine markets. Our products are engineered to deliver the very best in visual navigation information and with a legacy of marine navigation technology spanning over 80 years, Raymarine products are renowned today for their ease-of-use, rugged design, and reliability. We are constantly innovating to deliver best-in-class sensors and intelligent navigation systems - making your time on the water safer and fun. Autohelm Series Autopilots, Chartplotters, Communications, Compasses, Depth Sounders & Sonar, GPS, Hailers, Navigation Instruments, Navtex, Radar, VHF & SSB Radio, Weather Fax, AIS Receivers and Transceivers, and more. Nashua, New Hampshire

Airmar has become synonymous with world-class acoustic sensing technology. Our first product introduction was a transom mounted transducer for fish-finders. Today, Airmar develops and manufactures transducers for a diverse range of applications, including air-ranging industrial transducers, underwater scientific and survey transducers, weather sensing instruments and our extensive line of fish-finding transducers, headlined by our latest wide-beam Chirp products. In October 2013 Airmar acquired long-time partner and collaborator Marport, which designs and manufactures catch control and net monitoring sensors, echo sounders, current profilers and sonar for the world's fishing fleet. Milford, New Hampshire

Wide range of outdoor and marine products. Solar panels, compasses, binoculars, headlamps, weather instruments, and more. Louisville, Colorado

Weather Instruments. Hand-crafted on Cape Cod since 1939, Cape Cod Wind & Weather Indicators let you bring the weather indoors. These quality, precision instruments include the Cape Cod Wind Speed Indicator (available with optional Peak Gust Register), Cape Cod Wind Direction Indicator, Cape Cod Marine Barometer, and Cape Codder Clock (available with optional Tide Hand). West Harwich, Massachusetts

Weather Stations & Accessories. Instantaneous, on-site weather data for operational decisions in public safety and industries affected by meteorological conditions. Columbia Weather Systems offers cutting-edge, ultrasonic weather stations, as well as stations with popular mechanical wind sensors. Wired or wireless, our weather stations are trusted by industry and government agencies worldwide. Hillsboro, Oregon

Wide range of products including Weather Instruments, Organizers and storage pockets, Anchor holders. Boat hooks. Chafe guards and fender holders. Fish Seeker diving plane, Energy-efficient lights for boats, Deck plate keys, Cleaning equipment and supplies, Tiller locks, Rudder position indicators, Compasses, Sextants, Chart holders and charting tools, Colorful quick reference guides, Ladders, Radar reflectors, Emergency paddles and rescue kites, Propeller and trailer hitch covers, Rigging knives, Sail ties and sail track stops, Yachtsman's pig sticks, Wind direction indicators, Hand-held wind speed indicators, and more. Hayward, California

Excellence and innovation in marine electronics. AIS Receivers & Transponders, Autopilots, Chart Plotters, Electronic Compasses, Gyro Compasses, Depth Sounders & Fish Finders, GPS, Navtex, Radar, VHF & SSB Radio Equipment, Weather Fax and more. Since our inception in 1948, when the world's first fish finder was commercialized, FURUNO ELECTRIC CO., LTD. has been responding to the needs of the maritime industry through developing various types of marine electronics. Today, FURUNO is a total marine electronics manufacturer operating on a global scale with a great many loyal customers. Camas, Washington

Wind & Weather Products, Pocket Weather Meters. Nielsen-Kellerman Company designs, manufactures and distributes rugged, waterproof environmental and sports performance instruments for active lifestyles and technical applications, including Kestrel Weather & Environmental Meters, Kestrel Ballistics Meters for long range shooting accuracy, NK Electronics for Rowing and Paddling, and Blue Ocean Rugged Megaphones PA Systems. Boothwyn, Pennsylvania

The meteorological data provided by a single hand held Kestrel weather and wind speed meter like the Kestrel 4000 used to require expensive equipment that took up a truckload of space. Today, Kestrel wind meters and weather meters are as small as a mobile phone - and cost about the same. Hardly delicate pieces of equipment, Kestrel Meters are tough, immune to the elements, and even float in water. KestrelMeters.com has been an authorized dealer of Kestrel Meters since 2002. We operate out of our office and distribution center in Sylvan Lake, Michigan and our Research and Development office Minneapolis, Minnesota.

Navigation & Marine Software, Charts, Chart Plotters, Navigation Computers, Electronics, Navigation & Plotting Tools, Offshore Safety Gear, EPIRBs, Flares, Weather Instruments, and more. Landfall has been providing top quality equipment to boaters since 1982 and on the web since 1997. Since that time Landfall’s unwavering commitment to safety has remained constant. That commitment is reflected in the products we sell and the advice we give. Landfall is committed to meeting the needs of the marine community, including recreational boaters, professional mariners and law enforcement, & emergency personnel. Stamford, Connecticut

Since 1999, our ultrasonic wind sensors have not only been used by leisure sailors, but they are often installed on professional boats thanks to their robustness, lack of wear, and their long–term repeatability of measurements. Regatta sailors appreciate the sensitivity in low wind conditions, the light weight, and low power consumption of our sensors. With the variety of boats: sailboats, power boats, leisure boats, fishing boats, passenger and rescue boats, and so on …, we have designed a suitable model for each purpose. For over 20 years now, sailors from all over the world have been using our sensors with satisfaction. Vertou, France

Lightning Detections Solutions, LLC has partners with industry leaders in Lightning Detection and Weather related products to help keep you Safe and Dry in dangerous storm conditions. Offering the Thunderbolt Lightning Detector, the Storm Pro2 Lightning Detector, and NOAA Weather Radio | Receive NOAA Weather Emergency Alerts | NOAA Emergency Radio. Tampa, Florida

Maretron designs, manufactures and markets leading-edge marine electronic instrumentation for recreational and commercial boating. Our products are designed to the open industry NMEA 2000 standard. N2KView Vessel Monitoring and Control Software, multi-purpose graphical displays, alarms, navigation instruments, solid-state compass, ultrasonic wind/weather station, plug-and-play engine and vessel monitoring electronics, and more. Phoenix, Arizona

By Steve & Linda Dashew - The most complete guide to marine weather analysis, tactics, and storm avoidance. Teaches traditional forecasting based on current observed conditions, as well as the latest tools including facsimile charts and the Internet. An easy-to-use tool for sailors, power boaters, professional seamen, and anyone interested in the weather.

Wind & Weather Instruments. For more than three decades, Maximum has been building instruments that let you watch, forecast, and simply enjoy the weather. Today we offer more options for monitoring the weather than ever before. New Bedford, Massachusetts

Nielsen-Kellerman Company designs, manufactures and distributes rugged, waterproof environmental and sports performance instruments for active lifestyles and technical applications, including Kestrel Weather & Environmental Meters, NK Electronics for Rowing and Paddling, and Blue Ocean Rugged Megaphones & PA Systems. Boothwyn, Pennsylvania

Nielsen-Kellerman Company designs, manufactures and distributes rugged, waterproof environmental and sports performance instruments for active lifestyles and technical applications, including Kestrel Weather & Environmental Meters, Kestrel Ballistics Meters for long range shooting accuracy, NK Electronics for Rowing and Paddling, and Blue Ocean Rugged Megaphones PA Systems. Boothwyn, Pennsylvania

OCENS provides satellite equipment, airtime, software applications, and support, to help you stay connected. Weather, Email, and Wireless Communications Solutions for Satellite and Cellular Services. Personal Satellite Weather, Earth and Ocean Imaging Software, and Information Services. Seattle, Washington

Welcome! Thank you for your interest in our exciting line of ULTIMETER Weather Stations, that so many users are finding invaluable in their homes and businesses. We are manufacturers of home weather stations and professional weather stations, anemometers to measure wind speed and wind direction; electronic rain gauges; barometric pressure sensors for barometric pressure change; and humidity sensors for relative humidity, heat index, and dew point. For over 20 years, Peet Bros. has manufactured a variety of attractive, high-performance, easily-installed and long-lasting weather instruments and equipment. St. Cloud, Florida

Pronamic offer a wide range of rain and precipitation gauges, all equipped with unique tipping bucket technology. Our products are perfect for multiple applications areas, and are ideal for weather enthusiasts and industrial manufacturers. Ringkøbing, Denmark

For over 30 years Young meteorological sensors and displays have served successfully in settings as varied as tropical ocean buoys and frigid mountain observatories. The YOUNG ResponseONE Weather Transmitter measures four key meteorological variables with one compact instrument. It is ideal for many weather monitoring applications requiring accurate and reliable measurements. Ultrasonic wind speed and direction, atmospheric pressure, humidity and temperature sensors are carefully integrated into an enclosure optimized for durability, airflow and mitigation of solar radiation effects. Traverse City, Michigan

Weather Instruments. Leading the way in technological development - from the original tipping bucket rain gauge and 1st digital weather station to the new frontier of wind and solar monitoring instruments - our selection of more than 50 rain and temperature gauges, monitors, sensors, and related software products offer ideal monitoring solutions for weather enthusiasts, municipalities, federal government, and industrial manufacturers. Bar Harbor, Maine

RPR, a British company founded in Lymington in 1992 specialising in the design and manufacture of precision electronic wind weather monitoring and datalogging systems. We are the official UK distributor for Kestrel hand held wind instruments. Widely regarded as a market leader, Richard Paul Russell Ltd supplies complete wind and weather solutions using ultrasonic and hand-held technology combined with bespoke displays and data loggers of our own SpaceLogger brand. By using these products you will be joining others including the sailing elite, America's Cup teams, round the world sailors and Olympic medallists. Health & Safety, Construction, Festival management, Industry, Sport and Military markets. Milford on Sea, England, UK

Owner Robert Eldridge White, known as Ridge, is a specialist in the service, repair, and calibration of sextants, barometers, and barographs. Since 1918, when Wilfrid O. White formed the Kelvin & Wilfrid O. White Company in Boston, the White family has specialized in manufacturing and servicing finer nautical and weather instruments. In 1961 Robert E. White Instruments Inc. grew out of the former company, continuing sales and service. Today Robert E. White Instrument Services maintains the family tradition in the repair, service, and calibration of marine sextants, aneroid barometers, and barographs. We have long had a reputation for quality work and best business practices. Estimates are free, satisfaction is guaranteed, and service can most often be performed in a short time. Marblehead, Massachusetts

SkyScan is the most recognizable brand of portable lightning detectors available today. It’s currently used worldwide by companies and organizations that require simple easy to use technology that really works! Simple to use– easy to understand, no complicated menus to program simply power the unit on and the patented software in all SkyScan Models does everything else. Trust the leading brand of portable lighting detectors. Trust SkyScan Lightning Detectors. Brampton, Ontario, Canada

SkyScan is the most recognizable brand of portable lightning detectors available today. It's currently used worldwide by companies and organizations that require simple easy to use technology that really works! Arvada, Colorado

Skyview Weather delivers home weather watching equipment for individuals and innovative environmental solutions for companies. With over 25 years of experience in the sector, our range provides technology for environmental monitoring that won't let you down. At Skyview our experts design and produce many unique products and systems for monitoring the weather and our environmental surroundings. Our passion is the weather, from monitoring to forecasting, on a local, national and global scale. We are proud to offer a wide product range, from small, handheld devices through to robust, professional monitoring systems. We constantly monitor new technological developments to ensure that we can provide you with the very latest products on the market as they are released. Sudbury, Suffolk, England UK

StrikeAlert and StrikeAlert HD are small, personal lightning detectors that detect lightning up to 40 miles away, tell you how far away each strike is, and whether the storm cell is coming towards you or not. Colorado Springs, Colorado

Get the revolutionary Tempest Weather System and join the fastest growing observing network on the planet. The Tempest Weather System is a revolutionary personal weather system. Weather observations stream instantly from the solar-powered, wireless Tempest station through WeatherFlow's data center and are used to help provide a better forecast for your exact location. Wind & Weather meters are miniature weather stations you use with your smartphone via bluetooth to collect real-time wind, temperature, humidity and pressure readings. Readings are recorded and displayed directly in the 'Wind & Weather Meter' app. Scotts Valley, California

Here is a book that explains how to accurately predict weather patterns through observations of the clouds and wind and through clear-eyed readings of weather maps.

Welcome to The Weather Store, your source for the finest weather instruments, weather radios, cupolas and weather vanes. Since 1992, we have been committed to supplying accurate and dependable weather instruments including barometers, hygrometers, thermometers, and anemometers for amateur and professional use. Whether you are simply looking for rain gauges, unique weathervanes, or sophisticated weather stations, please browse our online catalog or contact us for friendly expert advice. Sandwich, Massachusetts

Armed with this book and a current weatherfax chart you will have all the essentials for making your own forcast no matter where you are in the world.

Marine Products - Bow Thrusters, Stern Thrusters, Diesel Engines, Port Holes, Steering Wheels, Ventilators, Ceiling Lights, Wipers, Weather Instruments, Flexible Tanks, Hydraulic Steering, Exhaust Systems, Windlasses, and more. Based in the Netherlands with subsidiaries world wide.

Weather Station Choices for All Budgets. Looking for that special weather station, barometer, or other weather instrument? Weather Shop can definitely help you out! With more weather equipment than any other shop in the UK, you will not be disappointed with our low prices, wide selections, and our service! We are a bricks & mortar family-owned business located in Ford, near Arundel, West Sussex, England, UK

Leading Provider of Weather Stations, Thermometers, Rain Gauges and other Weather Gear Since 2002. Our full line of cabled and wireless weather stations and wireless thermometers provide a wealth of information about the weather just beyond your door. Whether you're looking for something simple or complex, these weather instruments are sure to fit your needs. Home weather stations also make a fantastic gift! WeatherShack offers a wide array of weather-related products from the world's leading weather equipment manufacturers. We look forward to serving you! Roanoke, Virginia