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The build quality isn't exceptional, some of the edges are a little rough and the glue is visible through the acrylic. But, the condition is good, there's little to no wear on it. In terms of functionality, it seems to be working fine and will do well in its intended purpose as a demonstrator. An aneroid barometer, invented in 1843 by French scientist Lucien Vidie uses a small, flexible metal box called an aneroid cell (capsule), which is made from an alloy of beryllium and copper. [9] The evacuated capsule (or usually more capsules) is prevented from collapsing by a strong spring. Small changes in external air pressure cause the cell to expand or contract. This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the aneroid barometer. Many models include a manually set needle which is used to mark the current measurement so a change can be seen. In addition, the mechanism is made deliberately stiff so that tapping the barometer reveals whether the pressure is rising or falling as the pointer moves. - Wikipedia The build quality isn't exceptional, some of the edges are a little rough and the glue is visible through the acrylic. But, the condition is good, there's little to no wear on it. In terms of functionality, it seems to be working fine and will do well in its intended purpose as a demonstrator. An aneroid barometer, invented in 1843 by French scientist Lucien Vidie uses a small, flexible metal box called an aneroid cell (capsule), which is made from an alloy of beryllium and copper. [9] The evacuated capsule (or usually more capsules) is prevented from collapsing by a strong spring. Small changes in external air pressure cause the cell to expand or contract. This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the aneroid barometer. Many models include a manually set needle which is used to mark the current measurement so a change can be seen. In addition, the mechanism is made deliberately stiff so that tapping the barometer reveals whether the pressure is rising or falling as the pointer moves. - Wikipedia

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Aneroid Barometer [demonstration]

In stock

Product code: 002588
£19.95

The build quality isn't exceptional, some of the edges are a little rough and the glue is visible through the acrylic. But, the condition is good, there's little to no wear on it.
In terms of functionality, it seems to be working fine and will do well in its intended purpose as a demonstrator.

An aneroid barometer, invented in 1843 by French scientist Lucien Vidie uses a small, flexible metal box called an aneroid cell (capsule), which is made from an alloy of beryllium and copper. [9] The evacuated capsule (or usually more capsules) is prevented from collapsing by a strong spring. Small changes in external air pressure cause the cell to expand or contract. This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the aneroid barometer. Many models include a manually set needle which is used to mark the current measurement so a change can be seen. In addition, the mechanism is made deliberately stiff so that tapping the barometer reveals whether the pressure is rising or falling as the pointer moves. - Wikipedia

The build quality isn't exceptional, some of the edges are a little rough and the glue is visible through the acrylic. But, the condition is good, there's little to no wear on it.
In terms of functionality, it seems to be working fine and will do well in its intended purpose as a demonstrator.

An aneroid barometer, invented in 1843 by French scientist Lucien Vidie uses a small, flexible metal box called an aneroid cell (capsule), which is made from an alloy of beryllium and copper. [9] The evacuated capsule (or usually more capsules) is prevented from collapsing by a strong spring. Small changes in external air pressure cause the cell to expand or contract. This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the aneroid barometer. Many models include a manually set needle which is used to mark the current measurement so a change can be seen. In addition, the mechanism is made deliberately stiff so that tapping the barometer reveals whether the pressure is rising or falling as the pointer moves. - Wikipedia
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