Do these antique thermometers still work accurately?

Most of these historic instruments retain their original glass tubes and scales, meaning they still register temperature changes in a room. However, they are collected primarily for their historic and decorative value rather than laboratory precision. Changes in mercury columns or minor calibration shifts over the decades mean they serve best as ambient indicators and decorative artefacts of nineteenth-century science.

How do I care for a wood and glass thermometer?

Keep wooden cases and marble obelisks away from direct sunlight and sudden radiator heat to prevent timber splitting or veneer lifting. Dust the glass and timber surfaces gently with a dry, soft cloth. Avoid using liquid cleaners on the engraved scales or paper dials, as moisture can permanently damage the historic markings.

What is the difference between a stick and wheel barometer?

A stick barometer displays the open mercury column directly on a long wooden trunk, offering a direct and traditional reading of atmospheric pressure. These often include a companion thermometer tube mounted alongside the main scale. A wheel barometer encloses the mechanism within a case and uses a dial face with a pointer to show pressure changes, typically pairing the weather dial with a circular or vertical thermometer.

Were all nineteenth-century thermometers used on walls?

While many instruments hung in hallways or libraries, a significant number were made for portability or desk use. Travel thermometers came fitted in original leather cases for journeys, while marble obelisks stood firmly on study desks. Carriage clocks and mantel clocks also integrated thermometer dials into their metal frames for desktop utility.