What is a stick barometer?

A stick barometer is a tall, narrow weather glass mounted on a wooden backplate that displays atmospheric pressure directly through an exposed mercury column. These vertical instruments were designed to hang securely on interior walls where temperature changes remained stable.

How do wheel barometers work?

Wheel barometers use a concealed siphon tube containing mercury with a small glass float resting on the surface. A delicate silk thread connects the float to a pulley needle on the circular dial, translating vertical movement into rotational pointing. This mechanical linkage allows the instrument to display weather changes on an easy-to-read round face.

Where were these barometers made?

Makers constructed these instruments in workshops across London and various provincial English towns such as Newcastle, Liverpool, and Norwich. Many immigrant Italian instrument makers also established businesses in British cities during this era. Signed dials frequently record the exact maker and town of origin.

How do I care for a mercury barometer?

Hang the instrument securely on an interior wall away from direct sunlight, central heating radiators, and heavy vibrations. Maintaining a stable ambient temperature prevents erratic movement in the mercury column. When moving the piece, the mercury tube must be safely locked or tilted to prevent damage to the glass.