Q. I have a hand-carved barometer that is not in working condition. It 30 inches tall and is thought to be from Germany. What can you tell me about its history and value? – L.M. A. There are all sorts ...

THE Swedish engineer, G. Paulin, has recently applied the null reading principle to the aneroid barometer. The action of the instrument will readily be understood from the illustration (Fig. 1). The ...

Barometers are devices that measure atmospheric pressure (also known as “air pressure” or “barometric pressure”). You can use these readings to predict the weather. For instance, high pressure ...

Mercury-independent devices are increasingly being used in clinical practice as mercury will soon be removed from clinical use as a result of environmental, health and safety concerns. The aim of this ...

Knowing the air pressure is really important in forecasting as it can indicate short term changes in the weather. The instruments that measure air pressure are called 'barometers'. They work by ...