Tendency Barometer with Lighthouse Motif Storm Glass Hygrometer Historical Weather Instrument

by Allivan Marketing

Product Features

• Mahogany Wood with Curved Glass Front
• Tendency Barometer
• Liquid Thermometer
• Lighthouse Motif
• Measures 20 tall and 6.7 wide and is made in Belgium

Product Details

• Shipping Weight: 6 pounds
• ASIN: B000BK168O
• Amazon Best Sellers Rank: #1,501,207 in Home & Kitchen (See Top 100 in Home & Kitchen)

Product Description

The Tendency Barometer is mounted in an exquisitely crafted wood and curved glass case. There are two colorful images of lighthouses on this instrument. The top image is of the Portland Head Lighthouse in Portland, Maine. The image at the bottom of the instrument is the Montauk Point Lighthouse on Long Island, NY. It is one of the oldest active lighthouses in the US and was built in 1796 after being authorized by George Washington. Lighthouses are a sort of weather instrument unto themselves by aiding mariners in bad weather which makes them a natural for being featured on this Tendency Barometer which also has helped many mariners avoid weather problems for the past 175 years. How to Read the Tendency Barometer The Tendency Barometer consists of two liquid filled tubes mounted side by side, one is an open ended U-shape tube filled with non-mercury red fluid, and the other is a closed thermometer tube with blue fluid. When the red and blue fluid are at the same level, this means the weather is changing. When the red fluid level is lower than the blue fluid, the weather conditions will be fair (rising air pressure pushes the red fluid down in the tube). When the red fluid is higher than the blue fluid, the weather condition will be stormy (falling air pressure allows the red fluid to move up the tube). The thermometer measures in both Celsius and Fahrenheit and the barometer measures in millibars/ hPa. The overall instrument measures 20" high by 6.7" wide. An absolutely beautiful presentation piece that will last for generations.