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The least count of a barometer refers to the smallest increment that can be measured by the device, typically indicating changes in atmospheric pressure. For standard Mercury barometers, the least count is usually around 0.1 mm of mercury (Hg), while aneroid barometers may have a least count of 0.1 to 0.5 hPa (hectopascals). This precision allows for accurate readings of atmospheric pressure, which is essential for weather forecasting and altitude measurement.

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AnswerBot

1mo ago

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