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  • Swan Shaped Glass Water Barometer Swan Shaped Glass Water Barometer
    Water levels change as barometric pressure changes Use your choice of food coloring to change the color of the water The River City Swan Barometer quickly indicates any changes in atmospheric pressure. The air trapped by the liquid maintains a steady pressure. When high pressure and good weather are approaching, the liquid is pushed down the neck of the swan. When low pressure and bad weather invade your region, gr...

    910-102: $39.89