BADA is the leading trade association for the fine art, design and antiques community. Read our guide to caring for antique barometers.
Mercury expands or contracts according to temperature.
Consequently, antique barometers will be affected by exposure to extreme heat sources.
To retain accuracy, barometers should never be positioned close to a radiator or fireplace.
Make sure to remove any gold or silver jewellery before you handle a mercury barometer.
Mercury combines with precious metals on contact and will result in permanent staining.
Barometers are precision scientific instruments.
Sudden movement or accidental knocks can damage a barometer's delicate mechanism.
Before moving an antique barometer, consult a BADA specialist for advice on the best method of transit.
When moving mercury barometers always keep the instrument in an upright position.
This will prevent sudden movement of the mercury which can cause the glass tube to shatter.
Dealing with a mercury spillage
It is important to wear protective rubber gloves. Even when dealing with a small mercury spillage.
Use an eyedropper or pipette to collect the droplets.
Store the droplets securely in a sealed container.
Cleaning antique barometers
The best item for cleaning and antique barometers is a soft lint free duster.
For more delicate cleaning use a soft bristle brush. This will help to acccess hard to reach areas.
Avoid using metal polish when cleaning parts on wood mounted barometers.
This is because stray drips or spillages can permanently damage your wood's patina.
Major cleaning work should always be undertaken by an experienced restorer.
A BADA clock dealer will be happy to recommend a suitable professional.