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Weems and Plath Anniversary Barometer
Weems and Plath Anniversary Barometer
 

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$619.99

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Weems and Plath Classic Barograph
Weems and Plath Classic Barograph
 

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$1,169.99

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Weems and Plath Endurance 145 Barometer/Comfortmeter
Weems and Plath Endurance 145 Barometer/Comfortmeter
(4 Reviews)

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$209.99

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Weems and Plath Endurance 125 Comfortmeter
Weems and Plath Endurance 125 Comfortmeter
(1 Review)

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$144.99

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Weems and Plath Atlantis Barometer
Weems and Plath Atlantis Barometer
 

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$349.99 to $354.99

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Weems and Plath Endurance 125 Barometer
Weems and Plath Endurance 125 Barometer
(1 Review)

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$144.99 to $149.99

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Weems and Plath Cutter Barometer
Weems and Plath Cutter Barometer
 

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$219.99

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Weems and Plath Nautilus High Sensitivity Barometer with Inclinometer
Weems and Plath Nautilus High Sensitivity Barometer with Inclinometer
(1 Review)

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$399.99

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Downeaster Saltwater Series Fishing Barometer
Downeaster Saltwater Series Fishing Barometer
(1 Review)

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$79.98

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Downeaster Blue Dial Standard Barometer
Downeaster Blue Dial Standard Barometer
 

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$79.98

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Weems and Plath Martinique Barometer
Weems and Plath Martinique Barometer
 

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$339.99

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Weems and Plath Atlantis Premiere Barometer
Weems and Plath Atlantis Premiere Barometer
 

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$349.99

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Galileo Thermometer with Barometric Ball
Galileo Thermometer with Barometric Ball
(18 Reviews)

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$31.71

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Downeaster Freshwater Series Fishing Barometer
Downeaster Freshwater Series Fishing Barometer
(1 Review)

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$79.98

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Weems and Plath Atlantis Barometer and Thermometer Combination
Weems and Plath Atlantis Barometer and Thermometer Combination
 

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$311.99 to $319.99

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Downeaster Standard Barometer
Downeaster Standard Barometer
(6 Reviews)

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$79.98

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Mannon Weather Station Wall Clock
Mannon Weather Station Wall Clock
(2 Reviews)

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$238.50

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Weems and Plath Endurance 085 Barometer
Weems and Plath Endurance 085 Barometer
(1 Review)

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$119.99

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Manitou Weather Station Wall Clock
Manitou Weather Station Wall Clock
(1 Review)

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$238.50

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Manistee Weather Station
Manistee Weather Station
(2 Reviews)

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$171.00

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Raven Barometer
Raven Barometer
 

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$333.00

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Brass Ship Wheel Barometer
Brass Ship Wheel Barometer
(1 Review)

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$299.99

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Ramona Barometer
Ramona Barometer
 

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$279.99

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Ute Barometer
Ute Barometer
(2 Reviews)

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$299.99

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Upham Barometer
Upham Barometer
 

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$299.99

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Kenai Barometer
Kenai Barometer
(6 Reviews)

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$99.00

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Cape Cod Marine Barometer
Cape Cod Marine Barometer
(2 Reviews)

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$139.98

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Parish Weather Station
Parish Weather Station
 

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$175.50

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Pagosa Barometer
Pagosa Barometer
 

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$157.50

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Weems and Plath Bluewater Barometer
Weems and Plath Bluewater Barometer
 

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$69.99

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Osprey Barometer and Thermometer
Osprey Barometer and Thermometer
(12 Reviews)

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$109.99

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Keota Barometer and Thermometer
Keota Barometer and Thermometer
(24 Reviews)

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$159.99

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Kersey Weather Station
Kersey Weather Station
(4 Reviews)

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$180.00

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Chaney Tritan Wall Clock
Chaney Tritan Wall Clock
(5 Reviews)

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$31.89

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What is a Barometer?

Types
Mercury Barometers - there hasn't been much change since their invention in 1643. A column of mercury is inside a glass tube sealed at one end. The other end rests in a small cup of mercury, called a cistern. These old-fashioned barometers are fun and educational, but do so safely. Mercury is toxic and must be handled with care. If the barometer breaks, do not touch any mercury spill. Keep children out of the area. For more information on mercury, check out the EPA website for comprehensive clean-up instructions.

Aneroid (Analog) Barometers - Aneroid (without liquid) accurately describe how this barometer functions. Instead of mercury, these use a small metal box called an aneroid cell. This cell is actually a bellows and springs system which expands or contracts as air pressure changes.

How to Read a Barometer
Once you know what the average atmospheric pressure should be, following weather is one step closer. Barometers measure pressure in several units, usually inches or millibars. For the sake of efficient demonstration, let's assume the average pressure of a given area is 29 inches. Here's what can happen to that barometer reading:

No Change: If that reading stays at or very near 29 inches, that means the weather in the area is stable. No changes are occurring.

Increase: As the pressure increases, air is becoming heavier and more stable. When barometer readings go above 29 inches, weather generally gets warmer, even muggier. Because the air mass is not going anywhere, urban areas may experience smog.

Decrease: Conversely, as barometer readings fall, fast-moving low pressure air is coming in. Usually associated with winds and storms, low barometers tell a definite change is on the way.

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