barograph is use to record in graphical form the continuous changes in the atmospheric pressure.
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Measure floor to ceiling, measure wall length. Multiply one by the other, you now have the surface to be covered.
to measure sound from distance use decibels
The primary measure it looks at is the real GDP, which it considers to be the single best measure of aggregate economic activity.
A seismograph is used to measure ground movement or vibrations on the Richter scale.
The number of times your heart beats in a minute, the heart rate.