What do you think of barometer?

Barometer is an instrument used to measure air pressure, which usually consists of a barometer head and an air pressure dial.

When reading the barometer, you need to know the measuring unit and scale range of the barometer first. Generally, the unit of measurement of barometer is Pascal (Pa), and the calibration range is between 0 and 1000 Pascal. Put the barometer in the measured position, and then observe the scale pointed by the pointer on the barometer dial.

If the pointer points to scale 0, the air pressure is 0; If the pointer points to the scale of 1000, the air pressure is 1000 Pascal. According to the position and air pressure to be measured, the air pressure value of this position can be inferred.