Diagonal barometer

From Object Wiki

Diagonal barometer by Watkins and Smith
Manufacturer	Watkins and Smith
Production years	1753
Production location	London

Instruments combined with a perpetual calendar would help the natural philosopher to monitor the weather for a hundred years. The chart contains such vital information as the dates of religious festivals, the time of high water at London Bridge, the length of the day, and the dates of the reigns of the Kings of England.

[edit] How it works

A barometer is an instrument used to measure atmospheric pressure. It can measure the pressure exerted by the atmosphere by using water, air, or mercury. Pressure tendency can forecast short term changes in the weather. Numerous measurements of air pressure are used within surface weather analysis to help find surface troughs, high pressure systems, and frontal boundaries.

[edit] Memories

Do you remember this barometer? Add your memories.

[edit] In the Science Museum's Records

Inv: 1876-814 Source: Admiralty