Analog Weather Stations
Tendency Barometer with Solid Glass Frame
$119.99Last catalog price, November 2007
Catalog description
Tendency Barometer with Solid Glass Frame, part number AML029, is a discontinued product from the 2007–2011 catalog. It was last listed at $119.99.
This Tendency Barometer is mounted on a sandblasted solid glass frame. The crisp modern look is accented by the colorful measuring tubes.
The Tendency Barometer was patented on December 23 1818 by Alexander Adie. It consists of two liquid-filled mercury-free tubes. One tube in a U-shape is open-ended and filled with a red fluid; and one closed thermometer tube is filled with a blue fluid. These two tubes are mounted parallel to each other so theyre both easy to read.
When the fluid levels are the same the weather is changing.
When the red fluid level is below the blue fluid level the weather is fair (high pressure pushes the red fluid down in the tube).
When the red fluid level is above the blue stormy weather is predicted (low pressure allows the red fluid to move up the tube).
The thermometer measures in both Celsius and Fahrenheit and the barometer measures in inches and millibars/hPa. The overall instrument measures 18 inches tall by 4.7 inches wide and weighs two pounds.
More in Analog Weather Stations
- Sanderling Weather Station
- Nautical Collection Tendency Barometer
- Tendency Barometer with Classical Styling
- Mercury Free Psychrometer
- Weems and Plath Stormglass
- Acu-Rite Tahoe Weather Station
- Acu-Rite Geneva Weather Station
- Adie Ships Hull Tendency Barometer
- Banjo Weather Station with Stick Thermometer
- Glass Frame Weather Station
- Modern Lines Traditional Style Wood Frame Weather Station
- Traditional Style Wood Frame Weather Station
- Belgium-Made Weather Station
- Ships Hull Weather Station
- Weems and Plath Porthole Weather Center
- Weems and Plath Porthole Desk Barometer and Clock Set