Aneroid barometers function by measuring the expansion and contraction of a hollow metal capsule. The aneroid barometer and how to use it a barometer is an instrument for measuring the pressure of the air due to the weight of the column of air above it.

Aneroid Barometer Definition Examples Diagrams

The aneroid capsule which is the device that moves with changes in air.

Diagram of aneroid barometer. An aneroid barometer is an instrument used for measuring air pressure as a method that does not involve liquid. Diagram of the vacuum chamber spring and dial of an aneroid barometer devised by the author. Drawing of robert ho.

Raw materials the only components of a mercury baromeeter are glass and mercury. The author used the instrument apparently supplied by elliott brothers of the strand london during railway surveying work on behalf of the government of ceylon. As the earth s atmosphere gets thinner with increasing height it follows that as we ascend from sea level and low lying parts of the earth s surface the weight of the air will.

Figure 2 inscribed above section of vacuum box spring arm and plan of index. The evacuated capsule or usually several. Diagram of aneroid b.

This design of barometer is the more common vidi type being more accurate than the first aneroid. A brief description of the workings of an aneroid barometer. Invented in 1844 by french scientist lucien vidi the aneroid barometer uses a small flexible metal box called an aneroid cell capsule which is made from an alloy of beryllium and copper.

Aneroid barometers on the other hand are very complex machines similar to fine watches. Drawing of time regi. Artwork barometer.