Wooden Mercury Barometer
A wooden mercury barometer measures atmospheric pressure through liquid metal sealed in timber, bringing period domestic science into a hallway or study.
Wooden Mercury Barometer
A wooden mercury barometer represents a domestic scientific instrument housed within a timber case, designed to indicate weather changes through fluid movement in a glass tube. The selection spans the nineteenth century, encompassing Regency, Victorian, and Edwardian periods.
The prevalent form encountered here is the banjo barometer, alongside stick barometers and wheel configurations. Cases manifest in mahogany, rosewood, walnut, and oak, frequently embellished with inlay or carving.
Origins range across British provincial towns and London makers, alongside continental examples. Examples occasionally incorporate thermometers or mirror panels within the timber frame.
Materials and construction
Cases combine solid timbers such as mahogany, oak, walnut, and rosewood, shaped into curved trunks or banjo profiles and finished with veneers or marquetry. Mother of pearl inlay and brass bezels frequently accent the woodwork.
The functional heart relies on a sealed glass tube containing liquid mercury, paired with silvered metal scale plates inscribed with weather legends and maker details.
One surviving Victorian wheel barometer commemorates the life of the Duke of Wellington.
Assessing quality and execution
Quality rests upon the crispness of the timber carving, the precision of string inlay or marquetry, and the legibility of the engraved silvered metal dial. Finer examples display carefully selected grain figures, such as burr walnut or birds eye maple.
The integrity of the original glass tube and the preservation of the maker signature on the dial plate distinguish superior instances from altered or later assembled pieces.
B. Besozzi of Weymouth·Molton of Norwich·Jenkins Of Old Swindon·Negretti & Zambra·L Casatelli of Liverpool·W.E. Pain of Cambridge·Vecchio & Co of Shaftsbury·A. Rivolta·Alexander Adie·J Groce, York·J Hicks of London·F Salteri & Co., Nottingham·Malacrida of Dublin
The Wooden Mercury Barometer Glossary
- Banjo barometer
- A domestic weather glass housed in a shaped wooden case resembling a banjo, typically featuring a hygrometer or thermometer at the top and a circular dial at the base.
- Stick barometer
- A tall, narrow wall instrument where the mercury tube remains largely exposed along a vertical wooden trunk, valued for direct atmospheric readings.
- Wheel barometer
- An instrument employing a glass siphon tube with a float and pulley system to turn a pointer around a circular dial face.
- Silvered metal
- A brass or copper dial plate treated to achieve a soft, reflective metallic finish before engraving numerals and weather text.
- Aneroid barometer
- A later meteorological instrument measuring pressure via a sealed metal capsule rather than liquid mercury.
Wooden Mercury Barometer: Frequently Asked Questions
What is a wooden mercury barometer?
A wooden mercury barometer is an atmospheric pressure indicator encased in timber, utilising a column of liquid metal within glass to forecast weather conditions.
These pieces combine scientific utility with cabinetmaking, appearing in domestic interiors from the Georgian and Victorian eras.
How do you read a banjo barometer?
A banjo barometer uses a pointer on a circular dial connected to a float inside the lower reservoir, translating fluid movement into pressure changes.
Additional dials or spirit thermometers mounted on the wooden trunk provide supplementary temperature and moisture readings.
Where should a stick barometer hang?
A stick barometer requires a stable interior wall away from direct sunlight, central heating radiators, and heavy vibrations to ensure accurate pressure readings.
Mounting the wooden trunk securely at eye level allows clear observation of the mercury column and vernier scale.
How do I date an antique barometer?
Dating relies upon stylistic markers in the timber case, such as Regency pediments, Victorian carving, or Edwardian inlay patterns.
Inscribed maker signatures on the silvered metal dial plate provide reference points against trade directory records.