The difference in pressure between absolute and gauge pressure.
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To measure the length of a hallway, you would typically use a measuring tool such as a tape measure or a measuring wheel. Start at one end of the hallway and extend the measuring tool to the other end, ensuring it is straight and taut for an accurate measurement. Record the measurement in the appropriate units, such as feet or meters, to determine the length of the hallway.
M3 volume
a tape measure
You would measure it in centimeters.
A measuring jar.