"Thanks so much for your diligence in helping me get this replacement part for my weather station... It's good to see that outstanding service is alive and well at Weather Shack, and I really appreciate your help."
— Ed B.
Albemarle, NC
"This has been such a joy compared to many other places we've ordered from, I'm sure you will hear from us again."
— Ted M.
Perkins, OK
"Thank you so much for your prompt delivery of the weather station! I was so pleased by how quickly it arrived. My husband loves it. Thanks again for the great service!"
— Angie H.
Troutville, VA
"Thanks. I just placed my weather station order. I am ordering through you because of your timely response to my inquiry. I had emailed the same question to three other companies and you were the only person to answer. Thank you for your help and very quick service. On the net, as in real life, service is everything!!!"
— Steve L.
Orinda, CA
"...the wireless thermometer arrived and as predicted my father was thrilled. Thank you very much for your prompt attention to this order and I will be certain to share my WeatherShack experience with others."
— Ian B.
West Newton, MA
Barometers
Atmospheric or barometric pressure is the weight of the Earth's atmosphere on the surface at a given location. Atmospheric pressure depends on the amount of air above the location where the measurement is taken, consequently the pressure drops as you go higher. It also changes as low and high pressure systems move across the Earth's surface and it is this fact that makes barometers one of the most important instruments used to predict future weather conditions. Meteorologists report air pressure in both inches of Mercury (inHg) and hectoPascals (hPa), also called millibars (mb).
Analog barometers, also known as aneroid barometers, use a small, flexible metal box called an aneroid cell. This evacuated aneroid capsule (cell) is prevented from collapsing by a strong spring. Small changes in external air pressure cause the cell to expand or contract. This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the barometer. Digital barometers have a pressure sensor that's typically housed in the indoor display console. This solid state device uses a quartz membrane secured over an evacuated chamber, which flexes with changes in air pressure. These flexes are translated into voltage fluctuations that are converted to digital signals and sent to the microprocessor.
Analog BarometersWith its traditional styling, analog barometers use a reliable mechanical sensor to measure barometric pressure. Also called aneroid barometers, they are known for their ease of use, great accuracy, and proven dependability. Available in a wide range of affordable models. |
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Digital BarometersDigital technology has made digital barometers extremely popular for a number of reasons. Their affordability, contemporary styling, relatively compact size, and additional features make digital barometers a great choice. |
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StormglassesStormglasses are a mysterious weather predictor that have been used since 1750. The appearance of the crystals inside the sealed glass chamber indicates changes in the weather. Stormglasses make a beautiful and unique gift. |
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-- The Staff at WeatherShack.com
