Measuring instruments, namely pressure atmosphere. Used to measure the value that is caused by the pressure of the check ศ่โดย use liquids or solid materials that are exposed directly to the air. To change the value of the pressure. Measuring air pressure, several points can be processed and analyzed the surface air to aid in finding the Groove air pressure. High and low air pressure system and the pressure line. The barometer is currently popular with the 2 are as follows:
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