GK
UNITS DEVICES DIMENSIONS AND MEASUREMENTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Callipers
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Bolometer
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Barograph
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Barometer
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Detailed explanation-1: -Some aneroid barometers use a mechanical tool to track the changes in atmospheric pressure over a period of time. These aneroid barometers are called barographs.
Detailed explanation-2: -Ans. A barograph is a device that continuously records air pressure. The pressure-sensitive element, a partly evacuated metal cylinder, is connected to a pen arm in such a way that the vertical movement of the pen is proportional to air pressure variations.
Detailed explanation-3: -A barometer is an instrument which is used to measure the atmospheric pressure at a certain place or altitude.
Detailed explanation-4: -Barometers are instruments used to predict short term changes in weather patterns by measuring air pressure. There are two types of barometers: mercury and aneroid.