Dual Weather Station

Dual Weather Station: Two Historic Instruments, One Fascinating Display

Storm Glass
Once relied upon by 18th-century seafarers, the storm glass barometer predicts weather by reacting to atmospheric changes. Between 1834 and 1836, Admiral Robert FitzRoy refined the chemical formula and published observation guidelines—some of which are included inside.

Galileo Thermometer
In 1593, Galileo Galilei discovered that the density of liquids changes with temperature. This led to the invention of the Galileo thermometer—a device that measures temperature based on the predictable rise and fall of floating glass bulbs.

How It Works
The sealed glass cylinder contains five floating glass bulbs, each with a calibrated, weighted metal tag.

• The current temperature is shown by the lowest floating bulb.

• If one bulb hovers in the middle, read the temperature between that bulb and the lowest floating one.

Temperature Range: 16–32°C
Dimensions: 5 x 14 x 7 cm