Mention two instruments which measure the atmospheric pressure.
(N/A) The two common instruments used to measure atmospheric pressure are:
$1$. Mercury Barometer: It uses a column of mercury in a glass tube to balance the atmospheric pressure.
$2$. Aneroid Barometer: It uses a flexible metal box (aneroid cell) that expands or contracts with changes in atmospheric pressure,which is then indicated by a mechanical pointer.
$1$. Mercury Barometer: It uses a column of mercury in a glass tube to balance the atmospheric pressure.
$2$. Aneroid Barometer: It uses a flexible metal box (aneroid cell) that expands or contracts with changes in atmospheric pressure,which is then indicated by a mechanical pointer.
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