What is barometric pressure typically measured in?

Barometric pressure can indeed be measured in various units, which makes the selection of all of the provided options correct. Pascals are a standard metric unit for measuring pressure, and they are commonly used in scientific contexts. Pounds per square inch is a unit that is often used in the United States, particularly in automotive and industrial applications. Millimeters of mercury is a traditional unit that is widely used in meteorology and is particularly useful when discussing atmospheric pressure, as it dates back to the early methods of measuring pressure with mercury barometers.

The fact that barometric pressure can be expressed in any of these units highlights the versatility in measuring pressure and is why all three units are accepted forms of measurement in different contexts. This multifaceted approach to measurement ensures that whether in scientific research, everyday use, or specialized industries, barometric pressure can be accurately communicated and understood.