How do you test a barometer?

Answer 1

To test a barometer, you can compare its readings with a known reference, such as a reliable weather station or another calibrated barometer. Alternatively, you can perform a simple water displacement test by measuring the height of a column of Mercury or water and ensuring it corresponds to the atmospheric pressure. Additionally, you can check if the barometer responds appropriately to changes in altitude, as it should show a decrease in pressure when ascending and an increase when descending.