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You do nothing. The reading from the barometer is absolute pressure.
No , a Barometer measures air pressure.
if the barometer reading falls it means bad weather is coming
barometer is an instrument used to measure the pressure in the atmosphere and it also gives as an accurate reading.
One traditionally taps a barometer before taking the pressure reading and weather forecast.
You do nothing. The reading from the barometer is absolute pressure.
do you have to tap a barometer daily to get correct reading
No , a Barometer measures air pressure.
if the barometer reading falls it means bad weather is coming
Good question.Look at it like this if you had two barometers side by side, one a mercury barometer and the other a barometer that reacted to changes in air pressure using some bellows and a spring.Then, as the pressure changed you marked the second barometer positions and noted on the dial the inches reading from the mercury barometer, the second barometer measurement scale would mimic the real mercury barometer even though it did not actually use any mercury.
the spindle must be tighten to avoid slightly changes on the reading
barometer is an instrument used to measure the pressure in the atmosphere and it also gives as an accurate reading.
The barometer shows low air pressure in a hurricane.My pain increases when the barometer drops below 29.8 to 30.A barometer gives a reading of air pressure.
air pressure
Generally it means it is going to rain.
A reading of the air pressure. It's handy for rough weather predictions.
One traditionally taps a barometer before taking the pressure reading and weather forecast.